Diamond Sizes in MM
Professional Brilliant Round Cut Diamond Carat MM Conversion
MM to CT Round Cut Size Comparison Tool
Brilliant Round Cut Diamond Carat MM
0.21 – 5.20 cts
| ROUND CUT CARAT WEIGHT | ROUND CUT MM SIZE |
|---|---|
| 0.21 - 0.22 ct | 3.80 - 3.90mm |
| 0.23 - 0.24 ct | 3.90 - 4.00mm |
| 0.25 - 0.26 ct | 4.00 - 4.10mm |
| 0.26 - 0.27 ct | 4.10 - 4.20mm |
| 0.27- 0.28 ct | 4.20 - 0.43 mm |
| 0.30 -0.36 ct | 4.40 - 4.50 mm |
| 0.40 - 0.45 ct | 4.60 - 4.70 mm |
| 0.46 - 0.48 ct | 4.90 - 5.00 mm |
| 0.50 - 0.57 ct | 5.10 - 5.30 mm |
| 0.60 - 0.67 ct | 5.40 - 5.60 mm |
| 0.70 - 0.77 ct | 5.70 - 5.90 mm |
| 0.80 - 0.85 ct | 6.00 - 6.10 mm |
| 0.90 - 0.95 ct | 6.20 - 6.30 mm |
| 1.00 - 1.10 ct | 6.40 - 6.60 mm |
| 1.22 - 1.26 ct | 6.70 - 6.80 mm |
| 1.28 - 1.30 ct | 6.90 - 7.10 mm |
| 1.50 - 1.55 ct | 7.20 - 7.40 mm |
| 1.67 - 1.80 ct | 7.50 - 7.90 mm |
| 2.00 - 2.10 ct | 8.10 - 8.30 mm |
| 2.40 - 2.60 ct | 8.50 - 8.80 mm |
| 2.70 - 2.80 ct | 8.90 - 9.10 mm |
| 3.00 - 3.10 ct | 9.20 - 9.40 mm |
| 3.30 - 3.40 ct | 9.50 - 9.60 mm |
| 3.50 - 3.70 ct | 6.70 - 7.80 mm |
| 3.80 - 3.90 ct | 9.90 - 10.00 mm |
| 4.00 - 4.10 ct | 10.10 - 10.20 mm |
| 3.30 - 4.40 ct | 10.30 - 10.50 mm |
| 4.50 - 4.60 ct | 10.60 - 10.70 mm |
| 4.70 - 4.80 ct | 10.80 - 10.90 mm |
| 4.90 - 4.99 ct | 10.90 - 11.00 mm |
| 5.00 - 5.20 ct | 11.10 - 11.20 mm |
Round Cut Melee Diamond Conversion of CT MM / MM to Carat And Sieve Size Chart
0.005 – 0.20 cts
| ROUND CUT CARAT WEIGHT | ROUND CUT MM SIZE | CTS/PCS | ROUND CUT SIEVE SIZES |
|---|---|---|---|
| 0.005 ct | 0.90-1.10 mm | 1/200 | +000/-0 |
| 0.006 ct | 1.10-1.15 mm | 1/175 | +0/-1 |
| 0.007 ct | 1.15-1.20 mm | 1/150 | +1/-1.5 |
| 0.008 ct | 1.20-1.25 mm | 1/120 | +1.5/-2 |
| 0.009 ct | 1.25-1.30 mm | 1/100 | +2/-2.5 |
| 0.01 ct | 130-1.35 mm | 1/100 | +2.5/-3 |
| 0.011 ct | 1.35-1.40 mm | 1/100 | +3/-3.5 |
| 0.012 ct | 1.40-1.45 mm | 1/80 | +3.5/-4 |
| 0.013 ct | 1.45-1.50 mm | 1/80 | +4/-4.5 |
| 0.014 ct | 1.50-1.55 mm | 1/70 | +4.5/-5 |
| 0.016 ct | 1.55-1.60 mm | 1/60 | +5/-5.5 |
| 0.018 ct | 1.60-1.70 mm | 1/50 | +5.5/-6 |
| 0.021 ct | 1.70-1.80 mm | 1/50 | +6/-6.5 |
| 0.025 ct | 1.80-1.90 mm | 1/40 | +6.5/-7 |
| 0.029 ct | 1.90-2.00 mm | 1/30 | +7/-7.5 |
| 0.035 ct | 2.00-2.10 mm | 1/30 | +7.5/-8 |
| 0.039 ct | 2.10-2.20 mm | 1/25 | +8/-8.5 |
| 0.044 ct | 2.20-2.30 mm | 1/25 | +8.5/-9 |
| 0.052 ct | 2.30-2.40 mm | 1/20 | +9/-9.5 |
| 0.058 ct | 2.40-2.50 mm | 1/20 | +9.5/-10 |
| 0.069 ct | 2.50-2.60 mm | 1/15 | +10/-10.5 |
| 0.074 ct | 2.60-2.70 mm | 1/15 | +10.5/-11 |
| 0.078 ct | 2.70-2.80 mm | 1/12 | +11/-11.5 |
| 0.086 ct | 2.80-2.90 mm | 1/12 | +11.5/-12 |
| 0.095 ct | 2.90-3.00 mm | 1/10 | +12/-12.5 |
| 0.108 ct | 3.00-3.10 mm | 1/10 | +12.5/-13 |
| 0.116 ct | 3.10-3.20 mm | 1/8 | +13/-13.5 |
| 0.13 ct | 3.20-3.30 mm | 1/8 | +13.5/-14 |
| 0.145 ct | 3.30-3.40 mm | 1/6 | +14/-14.5 |
| 0.155 ct | 3.40-3.50 mm | 1/6 | +14.5/-15 |
| 0.165 ct | 3.50-3.60 mm | 1/6 | +15/-15.5 |
| 0.19 ct | 3.60-3.70 mm | 1/5 | +15.5/-15.75 |
| 0.20 ct | 3.70-3.80 mm | 1/5 | +15.75/-16.5 |
What is the Ideal Table and Depth for the Brilliant Round Cut Diamond?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
|
Table - % |
53% - 58% |
52% - 53% or 58% - 60% |
51% or 61% - 64% |
|
Depth - % |
59% - 62.3% |
58% - 58.9% or 62.4% - 63.5% |
57.5% - 57.9% or 63.6% - 64.1% |
|
Crown Angle |
34 - 34.9 |
32.1 - 33.9 or 35 - 35.9 |
30.1 - 32 or 36 - 37.9 |
|
Pavilion Depth - % |
42.8% - 43.2% |
42% - 42.7% or 43.3% - 43.9% |
41% - 41.9% or 44%- 45.5% |
|
Girdle |
Thin to Sl. Thick |
Very Thin to Sl. Thick |
Very Thin to Thick |
|
Culet |
None | Very Small | Small |
What is the Ideal Brilliant Round Cut Diamond Length to Width Ratio?
| EXCELLENT / VERY GOOD | GOOD | |
|---|---|---|
| Length To Width Ratio | 0.99 - 1.01 | 0.98-1.01 |
Professional Princess Diamond Size Chart
Detailed Carat to MM / MM to Carat Princess Cut Diamond Size Chart
Princess Cut Diamond MM Size Chart / CT Conversion Chart
| PRINCESS CARAT WEIGHT | PRINCESS CUT MM SIZE |
|---|---|
| 0.04 - 0.05 ct. | 1.90 - 2.00 mm. |
| 0.05 - 0.06 ct. | 2.10 - 2.20 mm. |
| 0.07 - 0.08 ct. | 2.30 - 2.40 mm. |
| 0.09 - 0,11 ct. | 2.50 - 2.60 mm. |
| 0.12 - 0.13 ct. | 2.70 - 2.80 mm. |
| 0.14 - 0.17 ct. | 2.90 - 3.00 mm. |
| 0.18 - 0.21 ct. | 3.10 - 3.20 mm. |
| 0.22 - 0.24 ct. | 3.30 - 3.40 mm. |
| 0.25 - 0.28 ct. | 3.50 - 3.60 mm. |
| 0.30 - 0.35 ct. | 3.70 - 3.80 mm. |
| 0.35 - 0.40 ct. | 3.90 - 4.00 mm. |
| 0.40 - 0.45 ct. | 4.10 - 4.20 mm. |
| 0.45 - 0.50 ct. | 4.30 - 4.40 mm. |
| 0.55 - 0.60 ct. | 4.50 - 4.60 mm. |
| 0.60 - 0.65 ct. | 4.70 - 4.80 mm. |
| 0.70 - 0.75 ct. | 4.90 - 5.00 mm. |
| PRINCESS CARAT WEIGHT | PRINCESS CUT MM SIZE |
|---|---|
| 0.80 - 0.89 ct. | 5.10 - 5.30 mm. |
| 0.90 - 0.98 ct. | 5.30 - 5.50 mm. |
| 1.00 - 1.15 ct | 5.40 - 5.60 mm. |
| 1.20 - 1.27 ct | 5.40 - 5.90 mm. |
| 1.30 - 1.45 ct | 5.80 - 6.40 mm. |
| 1.50 - 1.60 ct | 6.00 - 6.70 mm. |
| 1.65 - 1.80 ct | 6.50 - 7.00 mm. |
| 2.00 - 2.30 ct | 6.80 - 7.50 mm. |
| 2.40 - 2.60 ct | 7.20 - 7.90 mm. |
| 2.70 - 2.90 ct | 7.50 - 8.10 mm. |
| 3.00 - 3.30 ct | 7.70 - 8.50 mm. |
| 3.40 - 3.60 ct | 8.20 - 8.60 mm. |
| 3.70 -3.90 ct | 8.30 - 8.70 mm. |
| 4.00 - 4.20 ct | 8.40 - 9.10 mm. |
| 4.40 - 4.70 ct | 9.00 - 9.60 mm. |
| 5.00 - 5.25 ct | 9.20 - 10.00 mm. |
What is the Ideal Diamond Depth and Table for the Princess Cut?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
|
Table - % |
67% - 72% |
59% - 66% or 73% - 75% |
59% - 66% or 73% - 75% |
|
Depth - % |
64% |
75% |
58% - or 75.1% - 80% |
|
Girdle |
Very Thin to - |
Slightly Thick |
Very Thin to Thick |
|
Culet |
None | Very Small | Small |
What is the Ideal Brilliant Round Cut Diamond Length to Width Ratio?
| EXCELLENT / VERY GOOD | GOOD | |
|---|---|---|
| Length To Width Ratio | 1.00 - 1.03 | 1.04 - 1.05 |
Professional Square Cushion Cut Diamond Size Chart
Carat to MM / MM to Carat Square Cushion Cut Diamond Size Comparison Tool
Cushion Cut MM to Carat Diamond Conversion Charts
0.04 - 0.69 cts
| CUSHION CARAT WEIGHT | CUSHION CUT MM SIZE |
|---|---|
| 0.04 - 0.05 ct. | 1.90 - 2.00 mm. |
| 0.05 - 0.06 ct. | 2.10 - 2.20 mm. |
| 0.07 - 0.08 ct. | 2.30 - 2.40 mm. |
| 0.09 - 0,11 ct. | 2.50 - 2.60 mm. |
| 0.12 - 0.13 ct. | 2.70 - 2.80 mm. |
| 0.14 - 0.17 ct. | 2.90 - 3.00 mm. |
| 0.18 - 0.21 ct. | 3.10 - 3.20 mm. |
| 0.22 - 0.24 ct. | 3.30 - 3.40 mm. |
| 0.25 - 0.28 ct. | 3.50 - 3.60 mm. |
| 0.30 - 0.35 ct. | 3.70 - 3.80 mm. |
| 0.35 - 0.40 ct. | 3.90 - 4.00 mm. |
| 0.40 - 0.45 ct. | 4.10 - 4.20 mm. |
| 0.45 - 0.50 ct. | 4.30 - 4.40 mm. |
| 0.55 - 0.60 ct. | 4.50 - 4.60 mm. |
| 0.60 - 0.65 ct. | 4.70 - 4.80 mm. |
| 0.70 - 0.75 ct. | 4.90 - 5.00 mm. |
0.70 - 5.25 cts
| CUSHION CARAT WEIGHT | CUSHION CUT MM SIZE |
|---|---|
| 0.80 - 0.89 ct. | 5.10 - 5.30 mm. |
| 0.90 - 0.98 ct. | 5.30 - 5.50 mm. |
| 1.00 - 1.15 ct | 5.40 - 5.60 mm. |
| 1.20 - 1.27 ct | 5.40 - 5.90 mm. |
| 1.30 - 1.45 ct | 5.80 - 6.40 mm. |
| 1.50 - 1.60 ct | 6.00 - 6.70 mm. |
| 1.65 - 1.80 ct | 6.50 - 7.00 mm. |
| 2.00 - 2.30 ct | 6.80 - 7.50 mm. |
| 2.40 - 2.60 ct | 7.20 - 7.90 mm. |
| 2.70 - 2.90 ct | 7.50 - 8.10 mm. |
| 3.00 - 3.30 ct | 7.70 - 8.50 mm. |
| 3.40 - 3.60 ct | 8.20 - 8.60 mm. |
| 3.70 -3.90 ct | 8.30 - 8.70 mm. |
| 4.00 - 4.20 ct | 8.40 - 9.10 mm. |
| 4.40 - 4.70 ct | 9.00 - 9.60 mm. |
| 5.00 - 5.25 ct | 9.20 - 10.00 mm. |
What is the Ideal Diamond Depth and Table for the Princess Cut?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
|
Table - % |
67% - 72% |
59% - 66% or 73% - 75% |
59% - 66% or 73% - 75% |
|
Depth - % |
64% |
75% |
58% - or 75.1% - 80% |
|
Girdle |
Very Thin to - |
Slightly Thick |
Very Thin to Thick |
|
Culet |
None | Very Small | Small |
What is the Ideal Brilliant Round Cut Diamond Length to Width Ratio?
| EXCELLENT / VERY GOOD | GOOD | |
|---|---|---|
| Length To Width Ratio | 1.00 - 1.03 | 1.04 - 1.05 |
Rectangular Cushion Cut Diamond Size Chart
CT to MM / MM to CT Rectangular Cushion Cut Diamond Size Chart
Professional Rectangular Cushion Cut MM to CT Conversion Tool
0.08 - 0.89 cts
| RECTANGULAR CUSHION CARAT WEIGHT | RECTANGULAR CUSHION MM LENGTH | RECTANGULAR CUSHION MM WIDTH |
|---|---|---|
| 0.08 - 0.11 ct. | 2.90 - 3.10 mm. | 2.30 - 2.40 mm. |
| 0.10 - 0.13 ct. | 3.20 - 3.40 mm. | 2.40 - 2.50 mm. |
| 0.12 - 0.15 ct. | 3.30 - 3.50 mm. | 2.40 - 2.60 mm. |
| 0.13 - 0.16 ct. | 3.50 - 3.60 mm. | 2.60 - 2.80 mm. |
| 0.16 - 0.19 ct. | 3.70 - 3.80 mm. | 2.90 - 3.10 mm. |
| 0.17 - 0.20 ct. | 3.90 - 4.00 mm. | 2.90 - 3.10 mm. |
| 0.21 - 0.22 ct. | 4.10 - 4.20 mm. | 3.10 - 3.20 mm. |
| 0.23 - 0.27 ct. | 4.30 - 4.40 mm. | 3.20 - 3.30 mm. |
| 0.28 - 0.36 ct. | 4.40 - 4.50 mm. | 3.30 - 3.50 mm. |
| 0.36 - 0.42 ct. | 4.70 - 4.80 mm. | 3.40 - 3.80 mm. |
| 0.43 - 0.48 ct. | 4.90 - 5.00 mm. | 3.60 - 3.90 mm. |
| 0.49 - 0.52 ct. | 5.00 - 5.20 mm. | 4.00 - 4.20 mm. |
| 0.52 - 0.55 ct. | 5.20 - 5.40 mm. | 4.00 - 4.20 mm. |
| 0.60 - 0.67 ct. | 5.40 - 5.60 mm. | 4.30 - 4.50 mm. |
| 0.70 - 0.75 ct. | 5.60 - 5.70 mm. | 4.50 - 4.60 mm. |
| 0.80 - 0.89 ct. | 5.70 - 6.00 mm. | 4.50 - 4.60 mm. |
0.90 - 5.25 cts
| RECTANGULAR CUSHION CARAT WEIGHT | RECTANGULAR CUSHION MM LENGTH | RECTANGULAR CUSHION MM WIDTH |
|---|---|---|
| 1.00 - 1.15 ct. | 6.50 - 6.80 mm. | 4.90 - 5.10 mm. |
| 1.20 - 1.27 ct | 6.80 - 7.30 mm. | 5.40 - 5.70 mm. |
| 1.30 - 1.45 ct | 7.00 - 7.40 mm. | 5.80 - 5.90 mm. |
| 1.50 - 1.60 ct | 7.30 - 7.90 mm. | 5.80 - 6.20 mm. |
| 1.65 - 1.80 ct | 7.50 - 8.10 mm. | 6.10 - 6.50 mm. |
| 2.00 - 2.30 ct | 8.00 - 8.60 mm. | 6.40 - 6.80 mm. |
| 2.40 - 2.60 ct | 8.50 - 9.00 mm. | 6.90 - 7.20 mm. |
| 2.70 - 2.90 ct | 8.90 - 9.40 mm. | 7.10 - 7.30 mm. |
| 3.00 - 3.30 ct | 9.20 - 9.80 mm. | 7.30 - 7.70 mm. |
| 3.40 - 3.60 ct | 9.40 - 10.00 mm. | 7.60 - 7.90 mm. |
| 3.70 -3.90 ct | 9.90 - 11.00 mm. | 8.00 - 8.40 mm. |
| 4.00 - 4.20 ct | 10.00 - 11.00 mm. | 8.10 - 8.50 mm. |
| 4.40 - 4.70 ct | 10.70 - 11.50 mm. | 8.40 - 8.70 mm. |
| 5.00 - 5.25 ct | 11.00- 11.70 mm. | 8.70 - 9.10 mm. |
| 0.90 - 0.98 ct. | 6.10 - 6.40 mm. | 4.70 - 4.90 mm. |
What is the Recommended Diamond Depth and Table for the Rectangular Cushion Cut?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
| Table - % | 61% - 69% |
57% - 60% or 70% - 72% |
54% - 56% or 73% - 74% |
| Depth - % | 61% - 67% |
59% - 59.9% or 70.1% - 74% |
54% - 56.9% or 74.1% - 78% |
| Girdle | Very Thin to | Slightly Thick |
Very Thin to Thick |
| Culet | None | Very Small | Small |
What is the Ideal Brilliant Round Cut Diamond Length to Width Ratio?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
| Length To Width Ratio | 1.20-1.30 | 1.15 - 1.25 or 1.29 - 1.35 |
1.10 - 1.15 or 1.36 - 1.40 |
Professional Oval Diamond Size Chart
Detailed Oval Cut Size Comparison From CT to MM / MM to CT by Gemologists
Oval Cut Diamond Conversion Tool From CT to MM / MM to CT
0.04 - 1.15 cts.
| OVAL CUT CARAT WEIGHT | OVAL CUT LENGTH MM SIZE | OVAL CUT WIDTH MM SIZE |
|---|---|---|
| 0.04 - 0.07 ct | 2.50 - 3.40 mm. | 2.00 - 2.40 mm. |
| 0.08 - 0.12 ct | 3.40 - 4.80 mm. | 2.40 - 3.00 mm. |
| 0.13 - 0.17 ct | 3.90 - 4.40 mm. | 2.80 -3.10 mm. |
| 0.18 - 0.22 ct | 4.10 - 4.60 mm. | 3.00 - 3.40 mm. |
| 0.23 - 0.28 ct | 4.50 - 5.10 mm. | 3.30 - 3.60 mm. |
| 0.30 - 0.37 ct | 4.90 - 5.60 mm. | 3.60 - 4.00 mm. |
| 0.40 - 0.48 ct | 5.60 - 6.00 mm. | 4.00 - 4.40 mm. |
| 0.50 - 0.58 ct | 5.90 - 6.30 mm. | 4.40 - 4.60 mm. |
| 0.60 - 0.69 ct | 6.30 - 6.70 mm. | 4.60 - 4.80 mm. |
| 0.70 -0.78 ct | 6.60 - 6.80 mm. | 4.80 - 5.20 mm. |
| 0.80 - 0.88 ct | 6.90 - 7.30 mm. | 5.10 - 5.40 mm. |
| 0.90 - 0.98 ct | 7.20 - 7.80 mm. | 5.20 - 5.50 mm. |
| 1.00 - 1.15 ct | 7.90 - 8.20 mm. | 5.50 - 5.80 mm. |
1.20 to 1.15
| OVAL CUT CARAT WEIGHT | OVAL CUT LENGTH MM SIZE | OVAL CUT WIDTH MM SIZE |
|---|---|---|
| 1.20 - 1.27 ct | 8.10 -8.30 mm. | 6.00 - 6.10 mm. |
| 1.30 - 1.45 ct | 8.40 - 8.50 mm. | 6.00 - 6.20 mm. |
| 1.50 - 1.60 ct | 8.50 - 8.80 mm. | 6.20 -6.40 mm. |
| 1.65 - 1.80 ct | 8.90 - 9.60 mm. | 6.60 - 6.80 mm. |
| 2.00 - 2.30 ct | 9.80 - 10.10 mm. | 7.10 - 7.30 mm. |
| 2.40 - 2.60 ct | 10.30 -10.70 mm. | 7.50 - 7.80 mm. |
| 2.70 - 2.90 ct | 10.70 - 11.00 mm. | 7.80 - 7.90 mm. |
| 3.00 - 3.30 ct | 10.90 - 11.60 mm. | 8.00 - 8.40mm. |
| 3.40 - 3.60 ct | 11.50 - 12.00 mm. | 8.40 - 8.70 mm. |
| 3.70 -3.90 ct | 12.00 - 12.35 mm. | 8.80 - 8.90 mm. |
| 4.00 - 4.20 ct | 12.25 - 12.50 mm. | 8.80 - 9.00 mm. |
| 4.40 - 4.70 ct | 12.40 - 13.00 mm. | 9.00 - 9.30 mm. |
| 5.00 - 5.25 ct | 13.00 - 13.60 mm. | 9.40 - 9.70 mm. |
What is the Ideal Diamond Depth and Table for the Oval Cut?
Oval Cut Diamond Recommended Proportions Guide
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
|
Table - % |
67% - 72% |
59% - 66% or 73% - 75% |
59% - 66% or 73% - 75% |
|
Depth - % |
64% |
75% |
58% - 63.9% or 75.1% - 80% |
|
Girdle |
Very Thin to - |
Slightly Thick |
Very Thin to Thick |
|
Culet |
None | Very Small | Small |
What is the Ideal Brilliant Round Cut Diamond Length to Width Ratio?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
| Length To Width Ratio | 1.00 - 1.03 | 1.30 - 1.34 or 1.51 - 1.55 |
1.25 - 1.29 or 1.56 - 1.60 |
Professional Pear Shape Diamond Size Chart & Conversion Tool
Pear Cut Diamond Size Comparison Tool - CT to MM / MM to CT
0.4 - 1.15 cts
| PEAR SHAPE CARAT WEIGHT | LENGTH MM SIZE | WIDTH MM SIZE |
|---|---|---|
| 0.04 - 0.07 ct. | 3.30 - 3.70 mm. | 2.00 - 2.40 mm. |
| 0.08 - 0.12 ct. | 3.60 - 4.20 mm. | 2.40 - 2.80 mm. |
| 0.13 - 0.17 ct. | 4.10 - 4.80 mm. | 2.90 - 3.20 mm. |
| 0.18 - 0.22 ct. | 4.70 - 5.20 mm. | 3.10 - 3.30 mm. |
| 0.23 - 0.28 ct. | 5.10 - 5.80 mm. | 3.40 - 2.70 mm. |
| 0.30 - 0.37 ct. | 5.70 - 6.10 mm. | 3.60 - 4.00 mm. |
| 0.40 - 0.48 ct. | 6.10 - 6.60 mm. | 3.90 - 4.40 mm. |
| 0.50 - 0.59 ct. | 6.50 - 7.30 mm. | 4.30 - 4.60 mm. |
| 0.60 - 0.67 ct. | 6.80 - 7.40 mm. | 4.60 - 4.80 mm. |
| 0.70 - 0.78 ct. | 7.30 - 8.00 mm. | 4.80 - 5.00 mm. |
| 0.80 - 0.88 ct. | 8.00 - 8.40 mm. | 5.10 - 5.30 mm. |
| 0.90 - 0.98 ct. | 8.20 - 8.50 mm. | 5.30 - 5.50 mm. |
| 1.00 -1.15 ct. | 8.40 - 8.90 mm. | 5.60 - 5.80 mm. |
1.20 to 1.15
| PEAR SHAPE CARAT WEIGHT | LENGTH MM SIZE | WIDTH MM SIZE |
|---|---|---|
| 1.20 - 1.27 ct | 9.00 - 9.50 mm. | 5.90 - 6.00 mm. |
| 1.30 - 1.45 ct | 9.30 - 9.60 mm. | 6.10 - 6.20 mm. |
| 1.50 - 1.60 ct | 9.70 - 10.20 mm. | 6.30 - 6.50 mm. |
| 1.65 - 1.80 ct | 10.00 - 10.50 mm. | 6.50 - 6.70 mm. |
| 2.00 - 2.30 ct | 10.70 - 11.50 mm. | 7.00 - 7.30 mm. |
| 2.40 - 2.60 ct | 11.50 - 11.80 mm. | 7.40 - 7.70 mm. |
| 2.70 - 2.90 ct | 11.70 - 12.30 mm. | 7.70 - 7.80 mm. |
| 3.00 - 3.30 ct | 12.40 - 13.00 mm. | 8.00 - 8.20 mm. |
| 3.40 - 3.60 ct | 12.70 - 13.40 mm. | 8.30 - 8.50 mm. |
| 3.70 -3.90 ct | 13.30 - 13.70 mm. | 8.50 - 8.70 mm. |
| 4.00 - 4.20 ct | 13.60 - 14.00 mm. | 8.70 - 8.90 mm. |
| 4.40 - 4.70 ct | 14.00 - 14.30 mm. | 9.00 - 9.20 mm. |
| 5.00 - 5.25 ct | 14.50 - 15.50 mm. | 9.30 - 9.70 mm. |
What is the Ideal Diamond Depth and Table for the Pear Cut?
Recommended Proportions Guide
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
|
Table - % |
53% - 63% |
52% - 64% or 64% - 65% |
51% or 66% - 68% |
|
Depth - % |
58% - 62% |
56% - 57.9% or 62.1% - 66% |
53% - 55.9% or 66.1% - 71% |
|
Girdle |
Very Thin to - |
Slightly Thick |
Very Thin to Thick |
|
Culet |
None | Very Small | Small |
What is the Ideal Pear Cut Diamond Length to Width Ratio?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
| Length To Width Ratio | 1.45 - 1.55 | 1.40 - 1.45 or 1.56 - 1.65 |
1.35 - 1.39 or 1.66 - 1.80 |
Professional Emerald Cut Diamond Size Chart
Emerald Shaped Diamond Size Comparison From CT to MM / MM to CT
Emerald Cut Diamond Conversion Charts From CT to MM / MM to CT
0.08 - 0.74 cts.
| EMERALD CUT CARAT WEIGHT | EMERALD CUT LENGTH MM SIZE | EMERALD CUT WIDTH MM SIZE |
|---|---|---|
| 0.08 - 0.11 ct. | 2.90 - 3.20 mm. | 2.10 - 2.30 mm. |
| 0.12 - 0.14 ct. | 3.20 - 3.40 mm. | 2.30 - 2.50 mm. |
| 0.13 - 0.15 ct. | 3.30 - 3.50 mm. | 2.30 - 2.70 mm. |
| 0.14 - 0.16 ct. | 3.50 - 3.60 mm. | 2.60 - 2.80 mm. |
| 0.16 - 0.17 ct. | 3.70 - 3.80 mm. | 2.70 - 2.80 mm. |
| 0.18 - 0.21 ct. | 3.90 - 4.00 mm. | 2.70 - 2.90 mm. |
| 0.22 - 0.24 ct. | 4.10 - 4.20 mm. | 2.90 - 3.10 mm. |
| 0.25 - 0.28 ct. | 4.30 - 4.40 mm. | 3.10 - 3.30 mm. |
| 0.30 - 0.34 ct. | 4.50 - 4.60 mm. | 3.20 - 3.40 mm. |
| 0.35 - 0.38 ct. | 4.70 - 4.80 mm. | 3.40 - 3.50 mm. |
| 0.40 - 0.44 ct. | 4.90 - 5.00 mm. | 3.50 - 3.60 mm. |
| 0.45 - 0.48 ct. | 5.00 - 5.20 mm. | 3.60 - 3.80 mm. |
| 0.50 - 0.53 ct. | 5.20 - 5.50 mm. | 3.80 - 4.00 mm. |
| 0.54 - 0.57 ct. | 5.50 - 5.70 mm. | 4.00 - 4.20 mm. |
| 0.60 - 0.68 ct. | 5.70 - 5.80 mm. | 4.00 - 4.30 mm. |
| 0.70 - 0.74 ct. | 5.90 - 6.10 mm. | 4.20 - 4.50 mm. |
0.74 - 5.25 cts
| EMERALD CUT CARAT WEIGHT | EMERALD CUT LENGTH MM SIZE | EMERALD CUT WIDTH MM SIZE |
|---|---|---|
| 0.74 - 0.78 ct. | 6.10 - 6.20 mm. | 4.40 - 4.50 mm. |
| 0.80 - 0.88 ct. | 6.30 - 6.50 mm. | 4.40 - 4.70 mm. |
| 0.90 - 0.98 ct. | 6.50 - 6.70 mm. | 4.60 - 4.90 mm. |
| 1.00 - 1.15 ct. | 6.80 - 7.00 mm. | 4.80 - 5.20 mm. |
| 1.20 - 1.27 ct | 7.00 - 7.40 mm. | 5.10 - 5.3 mm. |
| 1.30 - 1.45 ct | 7.20 - 7.60 mm. | 5.20 - 5.50 mm. |
| 1.50 - 1.60 ct | 7.50 - 7.80 mm. | 5.40 - 5.60 mm. |
| 1.65 - 1.80 ct | 7.70 - 8.20 mm. | 5.60 - 5.80 mm. |
| 2.00 - 2.30 ct | 8.10 - 8.80 mm. | 6.00 - 6.40 mm. |
| 2.40 - 2.60 ct | 8.80 - 9.40 mm. | 6.40 - 6.70 mm. |
| 2.70 - 2.90 ct | 9.10 - 9.60 mm. | 6.60 - 6.80 mm. |
| 3.00 - 3.30 ct | 9.40 - 10.00 mm. | 6.70 - 7.30 mm. |
| 3.40 - 3.60 ct | 9.70 - 10.40 mm. | 7.20 - 7.40 mm. |
| 3.70 -3.90 ct | 9.90 - 10.80 mm. | 7.30 - 7.50 mm. |
| 4.00 - 4.20 ct | 10.30 - 10.80 mm. | 7.50 - 7.90 mm. |
| 4.40 - 4.70 ct | 10.80 - 11.20 mm. | 7.90 - 8.10 mm. |
| 5.00 - 5.25 ct | 11..20 - 11.80 mm. | 8.10 - 8.30 mm. |
What is the Ideal Diamond Depth and Table for the Emerald Cut?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
|
Table - % |
61% - 69% |
57% - 61% or 68% - 72% |
54% - 57% or 73% - 74% |
|
Depth - % |
60% - 67% |
58% - 61% or 67% - 70% |
|
|
Girdle |
Very Thin to - |
Slightly Thick |
Very Thin to Thick |
|
Culet |
None | Very Small | Small |
What is the Ideal Emerald Cut Diamond Length to Width Ratio?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
| Length To Width Ratio | 1.35 - 1.50 | 1.30 - 1.40 or 1.50 - 1.60 |
1.25 - 1.26 or 1.59 - 1.70 |
Professional Asscher Cut Diamond Size Chart
Asscher Shaped Diamond Size Comparison From CT to MM and Vice Versa
Asscher Cut Diamond CT to MM / MM to CT Conversion Chart
0.04 - 0.75 cts
| ASSCHER CUT CARAT WEIGHT | ASSCHER CUT MM SIZE |
|---|---|
| 0.04 - 0.05 ct. | 1.90 - 2.00 mm. |
| 0.05 - 0.06 ct. | 2.10 - 2.20 mm. |
| 0.07 - 0.08 ct. | 2.30 - 2.40 mm. |
| 0.09 - 0,11 ct. | 2.50 - 2.60 mm. |
| 0.12 - 0.13 ct. | 2.70 - 2.80 mm. |
| 0.14 -0.17 ct. | 2.90 - 3.10 mm. |
| 0.18 - 0.21 ct. | 3.20 - 3.30 mm. |
| 0.22 - 0.24 ct. | 3.30 - 3.40 mm. |
| 0.25 - 0.28 ct. | 3.50 - 3.70 mm. |
| 0.30 - 0.35 ct. | 3.70 - 3.90 mm. |
| 0.35 - 0.40 ct. | 3.90 - 4.00 mm. |
| 0.40 - 0.45 ct. | 4.10 - 4.20 mm. |
| 0.45 - 0.50 ct. | 4.30 - 4.40 mm. |
| 0.55 - 0.60 ct. | 4.50 - 4.60 mm. |
| 0.60 - 0.65 ct. | 4.70 - 4.80 mm. |
| 0.70 - 0.75 ct. | 4.90 - 5.20 mm. |
0.80 - 5.25 cts
| ASSCHER CUT CARAT WEIGHT | ASSCHER CUT MM SIZE |
|---|---|
| 0.80 - 0.89 ct. | 5.20 - 5.30 mm. |
| 0.90 - 0.98 ct. | 5.30 - 5.40 mm. |
| 1.00 - 1.15 ct | 5.50 - 5.60 mm. |
| 1.20 - 1.27 ct | 5.70 - 6.20 mm. |
| 1.30 - 1.45 ct | 6.10 - 6.50 mm. |
| 1.50 - 1.60 ct | 6.20 - 6.60 mm. |
| 1.65 - 1.80 ct | 6.50 - 7.00 mm. |
| 2.00 - 2.30 ct | 6.90 - 7.50 mm. |
| 2.40 - 2.60 ct | 7.40 - 7.90 mm. |
| 2.70 - 2.90 ct | 7.50 - 8.20 mm. |
| 3.00 - 3.30 ct | 7.80 - 8.50 mm. |
| 3.40 - 3.60 ct | 8.30 - 8.70 mm. |
| 3.70 -3.90 ct | 8.50 - 8.90 mm. |
| 4.00 - 4.20 ct | 8.70 - 9.20 mm. |
| 4.40 - 4.70 ct | 9.10 - 9.70 mm. |
| 5.00 - 5.25 ct | 9.20 - 10.00 mm. |
What is the Ideal Diamond Depth and Table for the Asscher Cut?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
|
Table - % |
61% - 69% |
57% - 60% or 70% - 72% |
54% - 56% or 73% - 74% |
|
Depth - % |
61% - 67% |
59% - 60.9% or 67.1% - 70% |
57% - 58.9% or 70.1% - 74% |
|
Girdle |
Very Thin to - |
Slightly Thick |
Very Thin to Thick |
|
Culet |
None | Very Small | Small |
What is the recommended Length to Width Ratio of an Asscher Cut Diamond?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
| Length To Width Ratio | 1.00 to | 1.03 | 1.04 - 1.05 |
Professional Square Radiant Cut Diamond Size Chart
Square Radiant Shaped Diamond Size Comparison Tool
Radiant Cut Diamond CT to MM / MM to CT Conversion Chart
0.04 - 0.77 cts
| SQUARE RADIANT CUT CARAT WEIGHT | SQUARE RADIANT CUT MM SIZE |
|---|---|
| 0.04 - 0.05 ct. | 1.90 - 2.00 mm. |
| 0.05 - 0.06 ct. | 2.10 - 2.20 mm. |
| 0.07 - 0.08 ct. | 2.30 - 2.40 mm. |
| 0.09 - 0.10 ct. | 2.50 - 2.60 mm. |
| 0.10 - 0.12 ct. | 2.70 - 2.80 mm. |
| 0.13 - 0.15 ct. | 2.90 - 3.00 mm. |
| 0.16 - 0.18 ct. | 3.10 - 3.20 mm. |
| 0.20 - 0.22 ct. | 3.20 - 3.40 mm. |
| 0.23 - 0.26 ct. | 3.50 - 3.60 mm. |
| 0.28 - 0.31 ct. | 3.70 - 3.80 mm. |
| 0.32 - 0.35 ct. | 3.90 - 4.00 mm. |
| 0.38 - 0.40 ct. | 4.10 - 4.20 mm. |
| 0.43 - 0.47 ct. | 4.30 - 4.40 mm. |
| 0.50 - 0.55 ct. | 4.50 - 4.60 mm. |
| 0.55 - 0.58 ct. | 4.70 - 4.80 mm. |
| 0.60 - 0.68 ct. | 4.90 - 5.00 mm. |
| 0.70 - 0.77 ct. | 5.00 - 5.20 mm. |
0.80 - 5.25 cts
| SQUARE RADIANT CUT CARAT WEIGHT | SQUARE RADIANT CUT MM SIZE |
|---|---|
| 0.80 - 0.88 ct. | 5.10 - 5.30 mm. |
| 0.90 - 0.98 ct. | 5.20 - 5.40 mm. |
| 1.00 - 1.15 ct | 5.50 - 5.60 mm. |
| 1.20 - 1.27 ct | 5.70 - 6.20 mm. |
| 1.30 - 1.45 ct | 6.10 - 6.50 mm. |
| 1.50 - 1.60 ct | 6.20 - 6.60 mm. |
| 1.65 - 1.80 ct | 6.50 - 7.00 mm. |
| 2.00 - 2.30 ct | 6.90 - 7.50 mm. |
| 2.40 - 2.60 ct | 7.40 - 7.90 mm. |
| 2.70 - 2.90 ct | 7.50 - 8.20 mm. |
| 3.00 - 3.30 ct | 7.80 - 8.50 mm. |
| 3.40 - 3.60 ct | 8.30 - 8.70 mm. |
| 3.70 -3.90 ct | 8.50 - 8.90 mm. |
| 4.00 - 4.20 ct | 8.70 - 9.20 mm. |
| 4.40 - 4.70 ct | 9.10 - 9.70 mm. |
| 5.00 - 5.25 ct | 9.20 - 10.00 mm. |
What is the Ideal Diamond Depth and Table for the Radiant Cut?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
|
Table - % |
61% - 69% |
57% - 60% or 70% - 72% |
54% - 56% or 73% - 74% |
|
Depth - % |
61% - 67% |
59% - 60.9% or 67.1% - 70% |
57% - 58.9% or 70.1% - 74% |
|
Girdle |
Very Thin to - |
Slightly Thick |
Very Thin to Thick |
|
Culet |
None | Very Small | Small |
What is the Ideal Length to Width Ratio of a Radiant Cut Diamond?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
| Length To Width Ratio | 1.00 to | 1.03 | 1.04 - 1.05 |
Professional Rectangular Radiant Cut Diamond Size Chart
Realistic Rectangular Radiant Shaped Diamond Size Comparison from CT TO MM / MM to CT
Rectangular Radiant Cut Diamond CT to MM / MM to CT
0.09 - 0.98 cts
| RECTANGULAR RADIANT CUT CARAT WEIGHT | RECTANGULAR RADIANT CUT LENGTH MM SIZE | RECTANGULAR RADIANT CUT WIDTH MM SIZE |
|---|---|---|
| 0.09 - 0.11 ct. | 2.90 - 3.10 mm. | 2.30 - 2.40 mm. |
| 0.11 - 0.13 ct. | 3.20 - 3.40 mm. | 2.40 - 2.50 mm. |
| 0.13 - 0.15 ct. | 3.30 - 3.50 mm. | 2.40 - 2.60 mm. |
| 0.14 - 0.16 ct. | 3.50 - 3.60 mm. | 2.60 - 2.80 mm. |
| 0.18 - 0.20 ct. | 3.70 - 3.80 mm. | 2.90 - 3.10 mm. |
| 0.19 - 0.22 ct. | 3.90 - 4.00 mm. | 2.90 - 3.10 mm. |
| 0.23 - 0.24 ct. | 4.10 - 4.20 mm. | 3.10 - 3.20 mm. |
| 0.25 - 0.28 ct. | 4.30 - 4.40 mm. | 3.20 - 3.30 mm. |
| 0.30 - 0.36 ct. | 4.40 - 4.50 mm. | 3.30 - 3.50 mm. |
| 0.38 - 0.44 ct. | 4.70 - 4.80 mm. | 3.40 - 3.80 mm. |
| 0.43 - 0.48 ct. | 4.90 - 5.00 mm. | 3.60 - 3.90 mm. |
| 0.49 - 0.52 ct. | 5.00 - 5.20 mm. | 4.00 - 4.20 mm. |
| 0.52 - 0.55 ct. | 5.20 - 5.40 mm. | 4.00 - 4.20 mm. |
| 0.60 - 0.67 ct. | 5.40 - 5.60 mm. | 4.30 - 4.50 mm. |
| 0.70 - 0.75 ct. | 5.60 - 5.70 mm. | 4.50 - 4.60 mm. |
| 0.80 - 0.89 ct. | 5.70 - 6.00 mm. | 4.50 - 4.60 mm. |
| 0.90 - 0.98 ct. | 6.10 - 6.40 mm. | 4.70 - 4.90 mm. |
1.00 - 5.25 cts
| RECTANGULAR RADIANT CUT CARAT WEIGHT | RECTANGULAR RADIANT CUT LENGTH MM SIZE | RECTANGULAR RADIANT CUT WIDTH MM SIZE |
|---|---|---|
| 1.00 - 1.15 ct. | 6.50 - 6.80 mm. | 4.90 - 5.10 mm. |
| 1.20 - 1.27 ct | 6.80 - 7.30 mm. | 5.40 - 5.70 mm. |
| 1.30 - 1.45 ct | 7.00 - 7.40 mm. | 5.80 - 5.90 mm. |
| 1.50 - 1.60 ct | 7.30 - 7.90 mm. | 5.80 - 6.20 mm. |
| 1.65 - 1.80 ct | 7.50 - 8.10 mm. | 6.10 - 6.50 mm. |
| 2.00 - 2.30 ct | 8.00 - 8.60 mm. | 6.40 - 6.80 mm. |
| 2.40 - 2.60 ct | 8.50 - 9.00 mm. | 6.90 - 7.20 mm. |
| 2.70 - 2.90 ct | 8.90 - 9.40 mm. | 7.10 - 7.30 mm. |
| 3.00 - 3.30 ct | 9.20 - 9.80 mm. | 7.30 - 7.70 mm. |
| 3.40 - 3.60 ct | 9.40 - 10.00 mm. | 7.60 - 7.90 mm. |
| 3.70 -3.90 ct | 9.90 - 11.00 mm. | 8.00 - 8.40 mm. |
| 4.00 - 4.20 ct | 10.00 - 11.00 mm. | 8.10 - 8.50 mm. |
| 4.40 - 4.70 ct | 10.70 - 11.50 mm. | 8.40 - 8.70 mm. |
| 5.00 - 5.25 ct | 11.00- 11.70 mm. | 8.70 - 9.10 mm. |
What is the Ideal Diamond Depth and Table for the Rectangular Radiant Cut?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
|
Table - % |
61% - 69% |
57% - 60% or 70% - 72% |
54% - 56% or 73% - 74% |
|
Depth - % |
61% - 67% |
59% - 59.9% or 70.1% - 74% |
54% - 56.9% or 74.1% - 78% |
|
Girdle |
Very Thin to - |
Slightly Thick |
Very Thin to Thick |
|
Culet |
None | Very Small | Small |
Recommended Length to Width Ratio of Rectangular Radiant Shaped Diamonds?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
| Length To Width Ratio | 1.20-1.30 | 1.15 - 1.25 or 1.29 - 1.35 |
1.10 - 1.15 or 1.36 - 1.40 |
Professional Heart Diamond Size Chart & Conversion Tool
MM to CT / CT to MM Heart Shaped Diamond Size Comparison
How to Accurately Measure a Heart Shaped Diamond
Heart Shaped Diamond CT to MM / MM to Carat Conversion Charts
0.18-5.20 cts (Excellent Cut)
| HEART SHAPE CARAT WEIGHT | HEART SHAPE MM SIZE (RATIO of 0.95 - 1.02) EXCELLENT CUT |
|---|---|
| 0.18 - 0.21 ct. | 3.50 - 3.70 mm. |
| 0.23 - 0.26 ct. | 3.80 - 4.10 mm. |
| 0.27 - 0.29 ct. | 4.20 - 4.40 mm. |
| 0.30 - 0.38 ct. | 4.50 - 4.70 mm. |
| 0.40 - 0.45 ct. | 4.90 - 5.10 mm. |
| 0.50 - 0.57 ct. | 5.20 - 5.50 mm. |
| 0.60 - 0.65 ct. | 5.60 - 5.70 mm. |
| 0.70 - 0.75 ct. | 5.80 - 6.10 mm. |
| 0.80 - 0.85 ct. | 6.10 - 6.30 mm. |
| 0.90 - 0.95 ct. | 6.20 - 6.50 mm. |
| 1.00 - 1.10 ct. | 6.40 - 6.70 mm. |
| 1.20 - 1.30 ct. | 7.00 - 7.40 mm. |
| 1.50 - 1.60 ct. | 7.50 - 7.90 mm. |
| 1.70 - 1.80 ct. | 8.00 - 8.20 mm. |
| 2.00 - 2.20 ct. | 8.30 - 8.60 mm. |
| 2.40 - 2.60 ct. | 8.40 - 8.90 mm. |
| 2.70 - 2.85 ct. | 8.80 - 9.30 mm. |
| 3.00 - 3.20 ct. | 9.30 - 9.80 mm. |
| 3.40 - 3.60 ct. | 9.50 - 9.90 mm. |
| 4.00 - 4.20 ct. | 9.80 - 10.00 mm. |
| 4.40 - 4.60 ct. | 9.90 - 10.30mm. |
| 5.00 - 5.20 ct. | 10.50 - 11.10 mm. |
0.17 - 2.20 cts (Good Cut)
| HEART SHAPE CARAT WEIGHT | HEART SHAPE MM SIZE (RATIO of 0.90 - 1.05) VERY GOOD CUT |
|---|---|
| 0.17 - 0.21 ct. | 3.30 - 3.70 mm. |
| 0.23 - 0.26 ct. | 3.60 - 3.90 mm. |
| 0.27 - 0.29 ct. | 4.00 - 4.30 mm. |
| 0.30 - 0.38 ct. | 4.20 - 4.60 mm. |
| 0.40 - 0.45 ct. | 4.60 - 4.90 mm. |
| 0.50 - 0.57 ct. | 4.90 - 5.30 mm. |
| 0.60 - 0.65 ct. | 5.30 - 5.70 mm. |
| 0.70 - 0.75 ct. | 5.50 - 5.80 mm. |
| 0.80 - 0.85 ct. | 5.80 - 6.00 mm. |
| 0.90 - 0.95 ct. | 5.90 - 6.30 mm. |
| 1.00 - 1.10 ct. | 6.10 - 6.50 mm. |
| 1.20 - 1.30 ct. | 6.60 - 7.00 mm. |
| 1.50 - 1.60 ct. | 7.10 - 8.50 mm. |
| 1.70 - 1.80 ct. | 5.00 - 5.30 mm. |
| 2.00 - 2.20 ct. | 7.90 - 8.20 mm. |
| 2.40 - 2.60 ct. | 8.00 - 8.50 mm. |
| 2.70 - 2.85 ct. | 8.40 - 9.00 mm |
| 3.00 - 3.20 ct. | 8.90 - 9.30 mm. |
| 3.40 - 3.60 ct. | 9.00 - 9.40 mm. |
| 4.00 - 4.20 ct. | 9.30 - 9.50 mm. |
| 4.40 - 4.60 ct. | 9.40 - 9.80 mm. |
| 5.00 - 5.20 ct. | 9.80 - 10.80 mm. |
Recommended Dpeth and Table for Heart Shapes
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
|
Table - % |
53% - 63% |
52% or 64% - 65% |
51% or 66% - 68% |
|
Depth - % |
58% - 62% |
56% - 57.9% or 62.1% - 66% |
53% - 55.9% or 66.1% - 71% |
|
Girdle |
Very Thin to - |
Slightly Thick |
Very Thin to Thick |
|
Culet |
None | Very Small | Small |
What is the Recommended Length to Width Ratio in Heart Cut Diamonds?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
| Length To Width Ratio | 0.95 - 1.02 | 0.89 - 0.94 or 1.03 - 1.05 |
0.83 - 0.87 or 1.06 - 1.10 |
Professional Marquise Diamond Size Chart
CT to MM / MM to CT Marquise Shaped Diamond Size Comparison Chart
Marquise Cut Diamond CT to MM / MM CT Conversion Shart
0.04 - 1.10 cts
| MARQUISE CUT CARAT WEIGHT | MARQUISE CUT LENGTH MM SIZE | MARQUISE CUT WIDTH MM SIZE |
|---|---|---|
| 0.04 - 0.07 ct. | 3.80 - 4.30 mm. | 1.80 - 2.10 mm. |
| 0.08 - 0.12 ct. | 4.20 - 4.90 mm. | 2.20 - 2.60 mm. |
| 0.13 - 0.17 ct. | 4.90 - 5.70 mm. | 2.50 - 2.90 mm. |
| 0.18 - 0.22 ct. | 5.60 - 6.30 mm. | 2.90 - 3.30 mm. |
| 0.23 - 0.28 ct. | 6.00 - 6.70 mm. | 3.10 - 3.40 mm. |
| 0.30 - 0.37 ct. | 6.50 - 7.20 mm. | 3.40 - 3.70 mm. |
| 0.40 - 0.48 ct. | 7.10 - 7.80 mm. | 3.70 - 4.20 mm. |
| 0.50 - 0.59 ct. | 7.50 - 8.50 mm. | 4.00 - 4.30 mm. |
| 0.60 - 0.67 ct. | 8.50 - 8.90 mm. | 4.20 - 4.50 mm. |
| 0.70 - 0.78 ct. | 8.80 - 9.30 mm. | 4.40 - 4.70 mm. |
| 0.80 - 0.88 ct. | 9.30 - 9.80 mm. | 4.70 - 4.80 mm. |
| 0.90 - 0.98 ct. | 9.30 - 10.00 mm. | 4.80 - 5.10 mm. |
| 1.00 -1.10 ct. | 9.80 - 11.00 mm. | 5.00 - 5.30 mm. |
1.20 - 5.25 cts
| MARQUISE CUT CARAT WEIGHT | MARQUISE CUT LENGTH MM SIZE | MARQUISE CUT WIDTH MM SIZE |
|---|---|---|
| 1.20 - 1.27 ct | 10.60 - 11.50 mm. | 5.30 - 5.50 mm. |
| 1.30 - 1.45 ct | 11.30 - 12.00 mm. | 5.60 - 5.70 mm. |
| 1.50 - 1.60 ct | 11.80 - 12.20 mm. | 5.80 - 6.00 mm. |
| 1.65 - 1.80 ct | 12.30 - 12.50 mm. | 6.00 - 6.20 mm. |
| 2.00 - 2.30 ct | 12.60 - 13.50 mm. | 6.30 - 6.50 mm. |
| 2.40 - 2.60 ct | 13.60 - 14.40 mm. | 6.60 - 7.00 mm. |
| 2.70 - 2.90 ct | 14.40 - 14.80 mm. | 7.00 - 7.40 mm. |
| 3.00 - 3.30 ct | 14.60 - 15.30 mm. | 7.50 - 7.70 mm. |
| 3.40 - 3.60 ct | 15.50 - 16.10 mm. | 7.70 - 7.90 mm. |
| 3.70 -3.90 ct | 16.20 - 16.40 mm. | 8.00 - 8.20 mm. |
| 4.00 - 4.20 ct | 16.40 - 16.80 mm. | 8.20 - 8.40 mm. |
| 4.40 - 4.70 ct | 16.70 - 17.30 mm. | 8.30 - 8.50 mm. |
| 5.00 - 5.25 ct | 17.40- 17.80 mm. | 8.60 - 9.20 mm. |
What is the Ideal Diamond Depth and Table for the Marquise Cut?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
|
Table - % |
61% - 69% |
57% - 60% or 70% - 72% |
54% - 56% or 73% - 74% |
|
Depth - % |
61% - 67% |
59% - 60.9% or 67.1% - 70% |
57% - 58.9% or 70.1% - 74% |
|
Girdle |
Very Thin to - |
Slightly Thick |
Very Thin to Thick |
|
Culet |
None | Very Small | Small |
What is the recommended Length to Width Ratio of Marquise Cut Diamond?
| EXCELLENT | VERY GOOD | GOOD | |
|---|---|---|---|
| Length To Width Ratio | 1.85 - 2.00 | 1.75 - 1.84 or 2.01 - 2.15 |
1.65 - 1.74 or 2.16 - 2.30 |
Professional Baguette Diamond Size Chart
Baguette Shaped Diamond Size Comparison of CT to MM / MM to CT
Tapered Baguette MM Width
| MM Length |
1.20 1.30 |
1.40 1.50 |
1.60 1.70 |
1.80 1.90 |
2.00 2.10 |
2.20 2.30 |
2.40 2.50 |
2.60 2.70 |
2.80 2.90 |
3.00 3.10 |
|
2.50 2.60 |
0.03 0.04 |
0.04 0.05 |
0.05 0.06 |
0.06 0.07 |
0,08 0.09 |
0.09 0.10 |
0.10 0.11 |
0.11 0.12 |
0.13 0.14 |
0.14 0.15 |
|
2.70 2.80 |
0.03 0.04 |
0.04 0.05 |
0.04 0.05 |
0.06 0.08 |
0,08 0.10 |
0.09 0.11 |
0.10 0.12 |
0.12 0.13 |
0.12 0.14 |
0.14 0.16 |
|
2.90 3.00 |
0.04 0.05 |
0.05 0.07 |
0.06 0.07 |
0.07 0.09 |
0.09 0.11 |
0.11 0.12 |
0.11 0.13 |
0.13 0.14 |
0.14 0.16 |
0.14 0.16 |
|
3.10 3.20 |
0.04 0.06 |
0.05 0.07 |
0.06 0.07 |
0.07 0.09 |
0.09 0.11 |
0.11 0.13 |
0.12 0.13 |
0.14 0.15 |
0.15 0.17 |
0.15 0.17 |
|
3.30 3.40 |
0.05 0.07 |
0.06 0.08 |
0.07 0.08 |
0.08 0.09 |
0.09 0.11 |
0.10 0.12 |
0.13 0.14 |
0.14 0.16 |
0.16 0.17 |
0.16 0.18 |
|
3.50 3.60 |
0.06 0.07 |
0.07 0.08 |
0.08 0.09 |
0.09 0.10 |
0.10 0.11 |
0.11 0.12 |
0.14 0.15 |
0.15 0.17 |
0.15 0.18 |
0.17 0.18 |
|
3.70 3.80 |
0.06 0.07 |
0.07 0.08 |
0.08 0.09 |
0.10 0.11 |
0.10 0.12 |
0.12 0.13 |
0.15 0.16 |
0.17 0.18 |
0.18 0.20 |
0.19 0.22 |
|
3.90 4.00 |
0.06 0.08 |
0.07 0.09 |
0.08 0.10 |
0.10 0.12 |
0.12 0.14 |
0.13 0.15 |
0.17 0.18 |
0.18 0.19 |
0.20 0.22 |
0.21 0.24 |
|
4.10 4.20 |
0.06 0.08 |
0.07 0.09 |
0.08 0.10 |
0.11 0.13 |
0.12 0.14 |
0.14 0.16 |
0.17 0.19 |
0.19 0.21 |
0.21 0.23 |
0.23 0.25 |
|
4.30 4.40 |
0.08 0.09 |
0.09 0.11 |
0.10 0.12 |
0.13 0.15 |
0.14 0.16 |
0.15 0.18 |
0.18 0.20 |
0.21 0.23 |
0.23 0.26 |
0.26 0.28 |
|
4.50 4.60 |
0.09 0.10 |
0.10 0.12 |
0.11 0.13 |
0.14 0.15 |
0.15 0.17 |
0.17 0.19 |
0.19 0.21 |
0.22 0.24 |
0.24 0.27 |
0.27 0.30 |
|
4.70 4.80 |
0.10 0.11 |
0.11 0.12 |
0.12 0.14 |
0.15 0.16 |
0.16 0.18 |
0.18 0.20 |
0.20 0.22 |
0.23 0.25 |
0.25 0.28 |
0.28 0.31 |
|
4.90 5.00 |
0.10 0.12 |
0.11 0.13 |
0.12 0.15 |
0.14 0.16 |
0.17 0.18 |
0.18 0.21 |
0.21 0.23 |
0.23 0.26 |
0.27 0.30 |
0.30 0.33 |
|
5.10 5.20 |
0.11 0.13 |
0.12 0.14 |
0.13 0.15 |
0.15 0.17 |
0.17 0.19 |
0.19 0.22 |
0.22 0.23 |
0.24 0.28 |
0.28 0.32 |
0.31 0.35 |
|
5.30 5.40 |
0.11 0.14 |
0.13 0.15 |
0.15 0.17 |
0.16 0.18 |
0.18 0.20 |
0.21 0.23 |
0.23 0.25 |
0.25 0.29 |
0.28 0.33 |
0.33 0.37 |
|
5.50 5.60 |
0.11 0.14 |
0.13 0.16 |
0.15 0.18 |
0.17 0.20 |
0.20 0.22 |
0.22 0.24 |
0.25 0.29 |
0.28 0.31 |
0.30 0.35 |
0.35 0.39 |
Professional Tapered Baguette Diamond Size Chart
Realistic CT to MM / MM to CT Tapered Baguette Size Comparison
Tapered Baguette MM Width
| MM Length |
1.20 1.30 |
1.40 1.50 |
1.60 1.70 |
1.80 1.90 |
2.00 2.10 |
2.20 2.30 |
2.40 2.50 |
2.60 2.70 |
2.80 2.90 |
3.00 3.10 |
|
2.50 2.60 |
0.02 0.03 |
0.03 0.04 |
0.04 0.05 |
0.05 0.06 |
0,07 0.07 |
0.07 0.08 |
0.08 0.09 |
0.09 0.10 |
0.11 0.11 |
0.11 0.12 |
|
2.70 2.80 |
0.02 0.03 |
0.03 0.04 |
0.04 0.05 |
0.05 0.07 |
0,07 0.08 |
0.08 0.09 |
0.08 0.10 |
0.10 0.11 |
0.10 0.11 |
0.11 0.13 |
|
2.90 3.00 |
0.03 0.04 |
0.04 0.06 |
0.05 0.06 |
0.06 0.07 |
0.07 0.09 |
0.09 0.10 |
0.09 0.11 |
0.11 0.11 |
0.11 0.13 |
0.11 0.13 |
|
3.10 3.20 |
0.03 0.05 |
0.04 0.06 |
0.05 0.06 |
0.06 0.07 |
0.07 0.09 |
0.09 0.11 |
0.10 0.11 |
0.11 0.12 |
0.12 0.14 |
0.12 0.14 |
|
3.30 3.40 |
0.04 0.06 |
0.05 0.07 |
0.06 0.07 |
0.07 0.07 |
0.07 0.09 |
0.08 0.10 |
0.11 0.11 |
0.11 0.13 |
0.13 0.14 |
0.13 0.15 |
|
3.50 3.60 |
0.05 0.06 |
0.06 0.07 |
0.07 0.07 |
0.07 0.08 |
0.08 0.09 |
0.09 0.10 |
0.11 0.12 |
0.12 0.14 |
0.12 0.15 |
0.14 0.15 |
|
3.70 3.80 |
0.05 0.06 |
0.06 0.07 |
0.07 0.07 |
0.08 0.09 |
0.08 0.10 |
0.10 0.11 |
0.12 0.13 |
0.14 0.15 |
0.15 0.16 |
0.16 0.18 |
|
3.90 4.00 |
0.05 0.07 |
0.06 0.07 |
0.07 0.08 |
0.08 0.10 |
0.10 0.11 |
0.11 0.12 |
0.14 0.15 |
0.15 0.16 |
0.16 0.18 |
0.17 0.20 |
|
4.10 4.20 |
0.05 0.07 |
0.06 0.07 |
0.07 0.08 |
0.09 0.11 |
0.10 0.11 |
0.11 0.13 |
0.14 0.16 |
0.16 0.17 |
0.17 0.19 |
0.19 0.21 |
|
4.30 4.40 |
0.07 0.07 |
0.07 0.09 |
0.08 0.10 |
0.11 0.12 |
0.11 0.13 |
0.12 0.15 |
0.15 0.16 |
0.17 0.19 |
0.19 0.21 |
0.21 0.23 |
|
4.50 4.60 |
0.07 0.08 |
0.08 0.10 |
0.09 0.11 |
0.11 0.12 |
0.12 0.14 |
0.14 0.16 |
0.16 0.17 |
0.18 0.20 |
0.20 0.22 |
0.22 0.25 |
|
4.70 4.80 |
0.08 0.09 |
0.09 0.10 |
0.10 0.11 |
0.12 0.13 |
0.13 0.15 |
0.15 0.16 |
0.16 0.18 |
0.19 0.21 |
0.21 0.23 |
0.23 0.25 |
|
4.90 5.00 |
0.08 0.10 |
0.09 0.11 |
0.10 0.12 |
0.11 0.13 |
0.14 0.15 |
0.15 0.17 |
0.17 0.19 |
0.19 0.21 |
0.22 0.25 |
0.25 0.27 |
|
5.10 5.20 |
0.09 0.11 |
0.10 0.11 |
0.11 0.12 |
0.12 0.14 |
0.14 0.16 |
0.16 0.18 |
0.18 0.19 |
0.20 0.23 |
0.23 0.26 |
0.25 0.29 |
|
5.30 5.40 |
0.09 0.11 |
0.11 0.12 |
0.12 0.14 |
0.13 0.15 |
0.15 0.16 |
0.17 0.19 |
0.19 0.21 |
0.21 0.24 |
0.23 0.27 |
0.27 0.30 |
|
5.50 5.60 |
0.09 0.11 |
0.11 0.13 |
0.12 0.15 |
0.14 0.16 |
0.16 0.18 |
0.18 0.20 |
0.21 0.24 |
0.23 0.25 |
0.25 0.29 |
0.29 0.32 |
Professional Carre Cut Diamond Size Chart
CT to MM and MM to Carat Carre Cut Size Comparison
Carre Cut Diamond Conversion Chart From CT to MM / MM to CT
0.05 - 1.05 cts
| CARRE CUT CARAT WEIGHT | CARRE CUT MM SIZE |
|---|---|
| 0.05 - 0.06 ct. | 1.90 - 2.00 mm. |
| 0.06 - 0.07 ct. | 2.10 - 2.20 mm. |
| 0.08 - 0.09 ct. | 2.30 - 2.40 mm. |
| 0.10 - 0.12 ct. | 2.50 - 2.60 mm. |
| 0.13 - 0.14 ct. | 2.70 - 2.80 mm. |
| 0.15 - 0.17 ct. | 2.90 - 3.00 mm. |
| 0.18 - 0.21 ct. | 3.10 - 3.20 mm. |
| 0,22 - 0.25 ct. | 3.30 - 3.40 mm. |
| 0.25 - 0.29 ct. | 3.50 - 3.60 mm. |
| 0,30 - 0.36 ct. | 3.70 - 3.80 mm. |
| 0.37 - 0.42 ct. | 3.90 - 4.00 mm. |
| 0.42 - 0.47 ct. | 4.10 - 4.20 mm. |
| 0.47 - 0.53 ct. | 4.30 - 4.40 mm. |
| 0.55 - 0.60 ct. | 4.50 - 4.60 mm. |
| 0.60 - 0.65 ct. | 4.70 - 4.80 mm. |
| 0.70 - 0.75 ct. | 4.90 - 5.00 mm. |
| 0.80 - 0.85 ct. | 5.10 - 5.20 mm. |
| 0.90 - 0.98 ct. | 5.30 - 5.40 mm. |
| 1.00 - 1.05 ct. | 5.50 - 5.60 mm. |
Professional Trapezoid Cut Diamond Size Chart
CT TO MM / MM to CT Size Comparison Tool for Trapezoid Diamonds
Trapezoid Brilliant Cut Diamond Pairs Conversion 0.28 - 1.30 ctw
| Pair Average Total Weight | Top Horizontal Length MM Size - (L-1) | Vertical Width MM Size - (W-1) | Bottom Horizontal Length MM Size - (L-2) |
|---|---|---|---|
| 0.28 - 0.32 ct tw | 3.60 - 3 .80 mm. | 2.60 - 2.70 mm. | 2.60 - 2.75 mm |
| 0.31 - 0.35 ct tw | 3.60 - 3 .80 mm. | 2.80 - 3.00 mm. | 2.60 - 2.75 mm |
| 0.31 - 0.34 ct tw | 3.90 - 4.10 mm. | 2.70 - 2.80 mm. | 2.90 - 3.00 mm |
| 0.38- 0.44 ct tw | 3.90 - 4.10 mm. | 2.90 - 3.10 mm. | 2.90 - 3.00 mm |
| 0.32 - 0.37 ct tw | 4.10 - 4.20 mm. | 2.70 - 2.80 mm. | 3.10 - 3.20 mm |
| 0.40 - 0.44 ct tw | 4.20- 4.30 mm. | 2.90 - 3.10 mm. | 3.20 - 3.45 mm |
| 0.38 - 0.44 ct tw | 4.40 - 4.50 mm. | 2.70 - 2.80 mm. | 3.30 - 3.50 mm |
| 0.43 - 0.47 ct tw | 4.40 - 4.50 mm. | 2.90 - 3.10 mm. | 3.30 - 3.50 mm |
| 0.40 - 0.44 ct tw | 4.60 - 4.80 mm. | 2.70 - 2.80 mm. | 3.60 - 3.90 mm |
| 0.44 - 0.47 ct tw | 4.60 - 4.80 mm. | 2.90 - 3.10 mm. | 3.60 - 3.90 mm |
| 0.40 - 0.45 ct tw | 4.90 - 5.20 mm. | 2.70 - 2.80 mm. | 3.90 - 4.10 mm |
| 0.50 - 0.55 ct tw | 4.90 - 5.20 mm. | 2.90 - 3.10 mm. | 3.90 - 4.10 mm |
| 0.58 - 0.64 ct tw | 4.90- 5.20 mm. | 3.20 - 3.30 mm. | 3.95 - 4.20 mm |
| 0.55 - 0.64 ct tw | 5.40 - 5.60 mm. | 2.90 - 3.10 mm. | 4.30 - 4.50 mm |
| 0.64 - 0.75 ct tw | 5.40 - 5.60 mm. | 3.20 - 3.40 mm. | 4.00 - 4.40 mm |
| 0.58 - 0.75 ct tw | 5.90 - 6.20 mm. | 2.90 - 3.10 mm. | 4.70 - 5.00 mm |
| 0.75 - 0.85 ct tw | 5.90 - 6.20 mm. | 3.30 - 3.50 mm. | 4.90 - 5.10 mm |
| 0.80 - 1.00 ct tw | 5.90 - 6.20 mm. | 3.60 - 4.00 mm. | 4.50 - 4.80 mm |
| 0.85 - 1.10 ct tw | 6.40 - 6.60 mm. | 3.80 - 4.20 mm. | 4.80 - 5.20 mm. |
| 0.97 - 1.20 ct tw | 6.40 - 6.60 mm. | 4.00 - 4.30 mm. | 4.80 - 5.20 mm. |
| 1.10 - 1.30 ct tw | 6.80 - 7.20 mm. | 4.00 - 4.30 mm. | 5.00 - 5.50 mm. |
Trapezoid Brilliant Cut Diamond Pairs Conversion 0.28 - 1.30 ctw
| Pair Average Total Weight | Top Horizontal Length MM Size - (L-1) | Vertical Width MM Size - (W-1) | Bottom Horizontal Length MM Size - (L-2) |
|---|---|---|---|
| 0.22 - 0.26 ct tw | 3.70 - 4.00 mm. | 2.50 - 2.70 mm. | 1.70 - 1.80 mm |
| 0.26 - 0.30 ct tw | 4.00 - 4.50 mm. | 2.70 - 3.00 mm. | 1.85 - 2.00 mm |
| 0.30 - 0.34 ct tw | 4.20 - 4.60 mm. | 2.85 - 3.15 mm. | 1.90 - 2.10 mm |
| 0.36 - 0.38 ct tw | 4.40 - 4.70 mm. | 3.00 - 3.20 mm. | 2.00 - 2.15 mm |
| 0.38 - 0.42 ct tw | 4.70 - 4.90 mm. | 3.15 - 3.30 mm. | 2.15 - 2.25 mm |
| 0.42 - 0.46 ct tw | 4.90 - 5.20 mm. | 3.30 - 3.50 mm. | 2.25 - 2.40 mm |
| 0.48 - 0.50 ct tw | 5.20 - 5.50 mm. | 3.50 - 3.75 mm. | 2.40 - 2.50 mm |
| 0.52 - 0.58 ct tw | 5.50 - 5.70 mm. | 3.75 - 3.85 mm. | 2.50 - 2.60 mm |
| 0.62 - 0.66 ct tw | 5.60 -5.90 mm. | 3.80 - 4.00 mm. | 2.60 - 2.70 mm |
| 0.70 - 0.76 ct tw | 5.90 - 6.30 mm. | 4.00 - 4.25 mm. | 2.70 - 2.90 mm |
| 0.78 - 0.80 ct tw | 6.20 - 6.50 mm. | 4.10 - 4.30 mm. | 2.85- 3.00 mm |
| 0.84 - 0.92 ct tw | 6.40 - 6.70 mm. | 4.15 - 4.40 mm. | 2.95 - 3.10 mm |
| 0.96 - 1.02 ct tw | 6.60 - 6.80 mm. | 4.15 - 4.40 mm. | 3.00 - 3.15 mm |
| 1.06 - 1.14 ct tw | 6.80 - 7.30 mm. | 4.25- 4.60 mm. | 3.15 - 3.35 mm |
| 1.24 - 1.38 ct tw | 7.20 - 7.50 mm. | 4.55 - 4.75 mm. | 3.30 - 3.45 mm. |
| 1.40 - 1.54 ct tw | 7.40 - 7.70 mm. | 4.70 - 4.85 mm. | 3.40 - 3.55 mm. |
| 1.58 - 1.72 ct tw | 7.60 - 8.10 mm. | 4.75 - 5.10mm. | 3.50 - 3.70 mm. |
| 1.76 - 2.00 ct tw | 8.00 - 8.70 mm. | 5.00 - 5.50 mm. | 3.70 - 4.00 mm. |
| 2.10 - 2.60 ct tw | 8.40 - 9.40 mm | 5.25 - 5.80 mm. | 3.90 - 4.30 mm. |
Trapezoid Step Cut Diamond Pairs Conversion Chart 0.29 - 1.40 ctw
| Pair Average Total Weight | Top Horizontal Length MM Size - (L-1) | Vertical Width MM Size - (W-1) | Bottom Horizontal Length MM Size - (L-2) |
|---|---|---|---|
| 0.29 - 0.33 ct tw | 3.60 - 3 .80 mm. | 2.60 - 2.70 mm. | 2.60 - 2.75 mm |
| 0.32- 0.36 ct tw | 3.60 - 3 .80 mm. | 2.80 - 3.00 mm. | 2.60 - 2.75 mm |
| 0.32 - 0.35 ct tw | 3.90 - 4.10 mm. | 2.70 - 2.80 mm. | 2.90 - 3.00 mm |
| 0.39- 0.45 ct tw | 3.90 - 4.10 mm. | 2.90 - 3.10 mm. | 2.90 - 3.00 mm |
| 0.33 - 0.38 ct tw | 4.10 - 4.20 mm. | 2.70 - 2.80 mm. | 3.10 - 3.20 mm |
| 0.41- 0.46 ct tw | 4.20- 4.30 mm. | 2.90 - 3.10 mm. | 3.20 - 3.45 mm |
| 0.39 - 0.45 ct tw | 4.40 - 4.50 mm. | 2.70 - 2.80 mm. | 3.30 - 3.50 mm |
| 0.44 - 0.48 ct tw | 4.40 - 4.50 mm. | 2.90 - 3.10 mm. | 3.30 - 3.50 mm |
| 0.41 - 0.45 ct tw | 4.60 - 4.80 mm. | 2.70 - 2.80 mm. | 3.60 - 3.90 mm |
| 0.45 - 0.49 ct tw | 4.60 - 4.80 mm. | 2.90 - 3.10 mm. | 3.60 - 3.90 mm |
| 0.41 - 0.47 ct tw | 4.90 - 5.20 mm. | 2.70 - 2.80 mm. | 3.90 - 4.10 mm |
| 0.51 - 0.57 ct tw | 4.90 - 5.20 mm. | 2.90 - 3.10 mm. | 3.90 - 4.10 mm |
| 0.59 - 0.66 ct tw | 4.90- 5.20 mm. | 3.20 - 3.30 mm. | 3.95 - 4.20 mm |
| 0.57 - 0.67 ct tw | 5.40 - 5.60 mm. | 2.90 - 3.10 mm. | 4.30 - 4.50 mm |
| 0.66 - 0.77 ct tw | 5.40 - 5.60 mm. | 3.20 - 3.40 mm. | 4.00 - 4.40 mm |
| 0.60 - 0.78 ct tw | 5.90 - 6.20 mm. | 2.90 - 3.10 mm. | 4.70 - 5.00 mm |
| 0.77 - 0.88 ct tw | 5.90 - 6.20 mm. | 3.30 - 3.50 mm. | 4.90 - 5.10 mm |
| 0.80 - 1.10 ct tw | 5.90 - 6.20 mm. | 3.60 - 4.00 mm. | 4.50 - 4.80 mm |
| 0.90 - 1.15 ct tw | 6.40 - 6.60 mm. | 3.80 - 4.20 mm. | 4.80 - 5.20 mm. |
| 1.00 - 1.25 ct tw | 6.40 - 6.60 mm. | 4.00 - 4.30 mm. | 4.80 - 5.20 mm. |
| 1.15 - 1.40 ct tw | 6.80 - 7.20 mm. | 4.00 - 4.30 mm. | 5.00 - 5.50 mm. |
Trapezoid Step Cut Diamond Pairs Conversion Chart 0.22 - 2.60 ctw
| Pair Average Total Weight | Top Horizontal Length MM Size - (L-1) | Vertical Width MM Size - (W-1) | Bottom Horizontal Length MM Size - (L-2) |
|---|---|---|---|
| 0.22 - 0.26 ct tw | 3.70 - 4.00 mm. | 2.50 - 2.70 mm. | 1.70 - 1.80 mm |
| 0.26 - 0.30 ct tw | 4.00 - 4.50 mm. | 2.70 - 3.00 mm. | 1.85 - 2.00 mm |
| 0.30 - 0.34 ct tw | 4.20 - 4.60 mm. | 2.85 - 3.15 mm. | 1.90 - 2.10 mm |
| 0.36 - 0.38 ct tw | 4.40 - 4.70 mm. | 3.00 - 3.20 mm. | 2.00 - 2.15 mm |
| 0.38 - 0.42 ct tw | 4.70 - 4.90 mm. | 3.15 - 3.30 mm. | 2.15 - 2.25 mm |
| 0.42 - 0.46 ct tw | 4.90 - 5.20 mm. | 3.30 - 3.50 mm. | 2.25 - 2.40 mm |
| 0.48 - 0.50 ct tw | 5.20 - 5.50 mm. | 3.50 - 3.75 mm. | 2.40 - 2.50 mm |
| 0.52 - 0.58 ct tw | 5.50 - 5.70 mm. | 3.75 - 3.85 mm. | 2.50 - 2.60 mm |
| 0.62 - 0.66 ct tw | 5.60 -5.90 mm. | 3.80 - 4.00 mm. | 2.60 - 2.70 mm |
| 0.70 - 0.76 ct tw | 5.90 - 6.30 mm. | 4.00 - 4.25 mm. | 2.70 - 2.90 mm |
| 0.78 - 0.80 ct tw | 6.20 - 6.50 mm. | 4.10 - 4.30 mm. | 2.85- 3.00 mm |
| 0.84 - 0.92 ct tw | 6.40 - 6.70 mm. | 4.15 - 4.40 mm. | 2.95 - 3.10 mm |
| 0.96 - 1.02 ct tw | 6.60 - 6.80 mm. | 4.15 - 4.40 mm. | 3.00 - 3.15 mm |
| 1.06 - 1.14 ct tw | 6.80 - 7.30 mm. | 4.25- 4.60 mm. | 3.15 - 3.35 mm |
| 1.24 - 1.38 ct tw | 7.20 - 7.50 mm. | 4.55 - 4.75 mm. | 3.30 - 3.45 mm. |
| 1.40 - 1.54 ct tw | 7.40 - 7.70 mm. | 4.70 - 4.85 mm. | 3.40 - 3.55 mm. |
| 1.58 - 1.72 ct tw | 7.60 - 8.10 mm. | 4.75 - 5.10mm. | 3.50 - 3.70 mm. |
| 1.76 - 2.00 ct tw | 8.00 - 8.70 mm. | 5.00 - 5.50 mm. | 3.70 - 4.00 mm. |
| 2.10 - 2.60 ct tw | 8.40 - 9.40 mm | 5.25 - 5.80 mm. | 3.90 - 4.30 mm. |
Professional Half Moon Cut Diamond Size Chart
MM to CT / CT TO MM Size Comparison Tool of Half Moon Shaped Diamonds
Half Moon Cut Diamond Conversion Charts From CT to MM / MM to CT
0.25 - 1.30 ctw
| PAIR AVERAGE TOTAL WEIGHT | HALF MOON LENGTH MM SIZE | HALF MOON WIDTH MM SIZE |
|---|---|---|
| 0.25 - 0.27 ct tw | 3.60 - 3 .80 mm. | 2.60 - 2.70 mm. |
| 0.28 - 0.32 ct tw | 3.60 - 3 .80 mm. | 2.80 - 3.00 mm. |
| 0.30 - 0.35 ct tw | 3.90 - 4.10 mm. | 2.70 - 2.80 mm. |
| 0.36- 0.38 ct tw | 3.90 - 4.10 mm. | 2.90 - 3.10 mm. |
| 0.30 - 0.33 ct tw | 4.20 - 4.10 mm. | 2.70 - 2.80 mm. |
| 0.36 - 0.40 ct tw | 4.20- 4.30 mm. | 2.90 - 3.10 mm. |
| 0.36 - 0.39 ct tw | 4.40 - 4.50 mm. | 2.70 - 2.80 mm. |
| 0.42 - 0.45 ct tw | 4.40 - 4.50 mm. | 2.90 - 3.10 mm. |
| 0.38 - 0.43 ct tw | 4.60 - 4.80 mm. | 2.70 - 2.80 mm. |
| 0.43 - 0.46 ct tw | 4.60 - 4.80 mm. | 2.90 - 3.10 mm. |
| 0.39 - 0.44 ct tw | 4.90 - 5.20 mm. | 2.70 - 2.80 mm. |
| 0.46 - 0.50 ct tw | 4.90 - 5.20 mm. | 2.90 - 3.10 mm. |
| 0.53 - 0.57 ct tw | 4.90 - 5.20 mm. | 3.20 - 3.30 mm. |
| 0.56 - 0.61 ct tw | 5.40 - 5.60 mm. | 3.20 - 3.40 mm. |
| 0.70 - 0.80 ct tw | 5.90 - 6.20 mm. | 3.40 - 3.70 mm. |
| 0.90 - 1.00 ct tw | 5.90 - 6.20 mm. | 3.80 - 4.20 mm. |
| 0.95 - 1.20 ct tw | 6.40 - 6.60 mm. | 4.00 - 4.30 mm. |
| 1.10 - 1.30 ct tw | 6.80 - 7.20 mm. | 4.20 - 4.50 mm. |
Straight Bullet Cut Diamond Size Chart
Size Comparison Tool for Straight Bullet Shaped Diamonds
Straight Bullet MM Width
| MM Length |
2.40 2.50 |
2.60 2.70 |
2.80 2.90 |
3.00 3.10 |
|
3.90 4.00 |
0.15 0.16 |
0.16 0.17 |
0.18 0.19 |
0.18 0.21 |
|
4.10 4.20 |
0.15 0.17 |
0.17 0.18 |
0.18 0.20 |
0.20 0.22 |
|
4.30 4.40 |
0.16 0.18 |
0.18 0.20 |
0.20 0.23 |
0.23 0.25 |
|
4.50 4.60 |
0.17 0.18 |
0.19 0.21 |
0.21 0.24 |
0.24 0.26 |
|
4.70 4.80 |
0.18 0.19 |
0.20 0.22 |
0.22 0.25 |
0.25 0.27 |
|
4.90 5.00 |
0.18 0.20 |
0.20 0.23 |
0.24 0.26 |
0.26 0.29 |
|
5.10 5.20 |
0.19 0.20 |
0.21 0.25 |
0.25 0.28 |
0.27 0.31 |
|
5.30 5.40 |
0.20 0.22 |
0.22 0.26 |
0.25 0.29 |
0.29 0.33 |
|
5.50 5.60 |
0.22 0.26 |
0.25 0.27 |
0.26 0.31 |
0.31 0.34 |
Professional Tapered Bullet Cut Diamond Size Chart
Size Comparison Tool of Tapered Bullet Shaped Diamonds From CT to MM / MM to CT
Tapered Bullet MM Width
| MM Length |
2.40 2.50 |
2.60 2.70 |
2.80 2.90 |
3.00 3.10 |
|
3.90 4.00 |
0.12 0.13 |
0.13 0.13 |
0.14 0.15 |
0.15 0.17 |
|
4.10 4.20 |
0.12 0.13 |
0.13 0.15 |
0.15 0.16 |
0.16 0.18 |
|
4.30 4.40 |
0.13 0.14 |
0.15 0.16 |
0.16 0.18 |
0.18 0.20 |
|
4.50 4.60 |
0.13 0.15 |
0.15 0.17 |
0.17 0.19 |
0.19 0.21 |
|
4.70 4.80 |
0.14 0.15 |
0.16 0.18 |
0.18 0.20 |
0.20 0.22 |
|
4.90 5.00 |
0.15 0.16 |
0.16 0.18 |
0.19 0.21 |
0.21 0.23 |
|
5.10 5.20 |
0.15 0.16 |
0.17 0.20 |
0.20 0.22 |
0.22 0.25 |
|
5.30 5.40 |
0.20 0.22 |
0.18 0.20 |
0.20 0.23 |
0.23 0.26 |
|
5.50 5.60 |
0.18 0.20 |
0.20 0.22 |
0.21 0.25 |
0.25 0.27 |
Professional Shield Cut Diamond Size Chart
Size Comparison Tool for Shieldt Shaped Diamonds From CT to MM / MM to CT
Shield Cut Diamond Conversion Chart 0.13 - 1.45 ctw
| PAIR AVERAGE TOTALE WEIGHT | LENGTH MM SIZE | WIDTH MM SIZE |
|---|---|---|
| 0.13 - 0.17 ct tw | 3.60 - 4.10 mm. | 3.20 - 2.90 mm. |
| 0.18 - 0.22 ct tw | 4.20 - 4 .40 mm. | 3.60 - 4.00 mm. |
| 0.23 - 0.27 ct tw | 4.30 - 5.10 mm. | 3.90 - 4.80 mm. |
| 0.28 - 0.37 ct tw | 4.80 - 5.60 mm. | 4.20 - 5.00 mm. |
| 0.38 - 0.47 ct tw | 5.20 - 5.80 mm. | 4.80 - 5.30 mm. |
| 0.48 - 0.59 ct tw | 5.40- 6.00 mm. | 5.00 - 5.80 mm. |
| 0.60 - 0.68 ct tw | 5.80 - 6.30 mm. | 5.40- 6.00 mm. |
| 0.70- 0.78 ct tw | 6.20- 6.80 mm. | 6.10 - 6.80 mm. |
| 0.80 - 0.89 ct tw | 6.70 - 7.40 mm. | 6.50 - 7.20 mm. |
| 0.90 - 0.98 ct tw | 7.20 - 7.80 mm. | 6.30 - 7.30 mm. |
| 1.00 - 1.10 ct tw | 7.60 - 8.50 mm. | 6.70 - 7.60 mm. |
| 1.18 - 1.45 ct tw | 8.00 - 8.90 mm. | 7.20 - 8.10 mm. |
Professional Trilliant Cut Diamond Size Chart
MM to CT / CT to MM Trilliant Shaped DIamond Size Comparison Tool
Trilliant Cut Diamond CT to MM / MM to CT Size Chart
Trillion Base to Point From CT to MM
0.04 - 0.69 cts
| CARAT WEIGHT | BASE TO POINT MM SIZE |
|---|---|
| 0.03 - 0.04 ct. | 2.20 - 2.40 mm. |
| 0.05 - 0.06 ct. | 2.50 - 2.80 mm. |
| 0.07 - 0.08 ct. | 3.00 - 3.20 mm. |
| 0.08 - 0.11 ct. | 3.10 - 3.30 mm. |
| 0.13 - 0,15 ct. | 3.30 - 3.60 mm. |
| 0.15 - 0.17 ct. | 3.60 - 4.10 mm. |
| 0.17 - 0.19 ct. | 3.80 - 4.20 mm. |
| 0.20 - 0.21 ct. | 4.00 - 4.30 mm. |
| 0.22 - 0.24 ct. | 4.20 - 4.40 mm. |
| 0.24 - 0.26 ct. | 4.40 - 4.70 mm. |
| 0.27 - 0.28 ct. | 4.70 - 5.00 mm. |
| 0.30 - 0.33 ct. | 5.00 - 5.10 mm. |
| 0.35 - 0.38 ct. | 5.10 - 5.30 mm. |
| 0.40 - 0.43 ct. | 5.30 - 5.70 mm. |
| 0.44 - 0.46 ct. | 5.60 - 5.90 mm. |
| 0.48 - 0.52 ct. | 5.70 - 6.00 mm. |
| 0.55 - 0.58 ct. | 5.90 - 6.20 mm. |
| 0.60 - 0.65 ct. | 6.10 - 6.60 mm. |
| 0.70 - 0.78 ct. | 6.50 - 6.80 mm. |
| 0.80 - 0.87 ct. | 6.70 - 6.90 mm. |
| 0.90 - 0.98 ct. | 6.80 - 7.30 mm. |
| 1.00 - 1.15 ct. | 7.20 - 7.80 mm |
| 1.18 - 1.45 ct | 7.50 - 8.30 mm |
Trillion Base to Point From CT to MM
0.70 - 5.25 cts
| CARAT WEIGHT | POINT TO POINT MM SIZE |
|---|---|
| 0.03 - 0.04 ct. | 2.40 - 2.60 mm. |
| 0.05 - 0.06 ct. | 2.80 - 3.10 mm. |
| 0.07 - 0.08 ct. | 3.20 - 3.50 mm. |
| 0.08 - 0.11 ct. | 3.40 - 3.70 mm. |
| 0.13 - 0,15 ct. | 3.70 - 4.00 mm. |
| 0.15 - 0.17 ct. | 4.00 - 4.50 mm. |
| 0.17 - 0.19 ct. | 4.20 - 4.60 mm. |
| 0.20 - 0.21 ct. | 4.40 - 4.70 mm. |
| 0.22 - 0.24 ct. | 4.70 - 4.90 mm. |
| 0.24 - 0.26 ct. | 4.90 - 5.20 mm. |
| 0.27 - 0.28 ct. | 5.20 - 5.50 mm. |
| 0.30 - 0.33 ct. | 5.50 - 5.70 mm. |
| 0.35 - 0.38 ct. | 5.60 -5.90 mm. |
| 0.40 - 0.43 ct. | 5.90 - 6.30 mm. |
| 0.44 - 0.46 ct. | 6.20 - 6.50 mm. |
| 0.48 - 0.52 ct. | 6.40 - 6.70 mm. |
| 0.55 - 0.58 ct. | 6.60 - 6.80 mm. |
| 0.60 - 0.65 ct. | 6.80 - 7.30 mm. |
| 0.70 - 0.78 ct. | 7.20 - 7.50 mm. |
| 0.80 - 0.87 ct. | 7.40 - 7.70 mm. |
| 0.90 - 0.98 ct. | 7.60 - 8.10 mm. |
| 1.00 - 1.15 ct. | 8.00 - 8.70 mm. |
| 1.18 - 1.45 ct | 8.40 - 9.40 mm |
Professional Size Conversion Chart for Calf Cut Diamonds
Calf Cut Diamond Conversion Chart - CT to MM / MM to CT
Cushion Cut MM to Carat Diamond Conversion Charts
0.12 – 1.38 cts
| CARAT WEIGHT | TOP HORIZONTAL LENGTH MM SIZE | VERTICAL WIDTH MM SIZE |
|---|---|---|
| 0.12 - 0,14 ct. | 3.50 - 3.80 mm. | 3.20 - 3.40 mm. |
| 0.14 - 0.16 ct. | 3.80 - 4.30 mm. | 3.40 - 3.80 mm. |
| 0.16 - 0.18 ct. | 4.00 - 4.40 mm. | 3.60 - 3.90 mm. |
| 0.19 - 0.20 ct. | 4.20 - 4.50 mm. | 3.70 - 4.00 mm. |
| 0.21 - 0.23 ct. | 4.40 - 4.70 mm. | 4.00 - 4.20 mm. |
| 0.23 - 0.25 ct. | 4.60 - 5.00 mm. | 4.20 - 4.40 mm. |
| 0.26 - 0.27 ct. | 5.00 - 5.20 mm. | 4.40 - 4.70 mm. |
| 0.29 - 0.31 ct. | 5.20 - 5.40 mm. | 4.70 - 4.90 mm. |
| 0.33 - 0.36 ct. | 5.30 -5.60 mm. | 4.80 -5.00 mm. |
| 0.38 - 0.41 ct. | 5.60 - 6.00 mm. | 5.00 - 5.40 mm |
| 0.42 - 0.44 ct. | 5.90 - 6.20 mm. | 5.30 - 5.50 mm. |
| 0.46 - 0.49 ct. | 6.10 - 6.30 mm. | 5.50 - 5.70 mm. |
| 0.52 - 0.55 ct. | 6.30 - 6.40 mm. | 5.70 - 5.80 mm. |
| 0.57 - 0.62 ct. | 6.40 - 6.90 mm. | 6.40 - 6.90 mm. |
| 0.67 - 0.74 ct. | 6.90 - 7.10 mm. | 6.80 - 7.10 mm. |
| 0.76 - 0.83 ct. | 7.00 - 7.30 mm. | 7.00 - 7.30 mm. |
| 0.86 - 0.93 ct. | 7.20 - 7.70 mm. | 7.20 - 7.70 mm. |
| 0.95 - 1.09 ct. | 7.60 - 8.20 mm. | 7.60 - 8.25 mm. |
| 1.12 - 1.38 ct | 8.00 - 8.90 mm | 8.00 - 8.90 mm |
Professional Size Conversion Chart for Calf Cut Diamonds
Calf Cut Diamond Conversion Chart - CT to MM / MM to CT
0.12 – 1.38 cts
| CARAT WEIGHT | TOP HORIZONTAL LENGTH MM SIZE | VERTICAL WIDTH MM SIZE |
|---|---|---|
| 0.12 - 0,14 ct. | 3.50 - 3.80 mm. | 3.20 - 3.40 mm. |
| 0.14 - 0.16 ct. | 3.80 - 4.30 mm. | 3.40 - 3.80 mm. |
| 0.16 - 0.18 ct. | 4.00 - 4.40 mm. | 3.60 - 3.90 mm. |
| 0.19 - 0.20 ct. | 4.20 - 4.50 mm. | 3.70 - 4.00 mm. |
| 0.21 - 0.23 ct. | 4.40 - 4.70 mm. | 4.00 - 4.20 mm. |
| 0.23 - 0.25 ct. | 4.60 - 5.00 mm. | 4.20 - 4.40 mm. |
| 0.26 - 0.27 ct. | 5.00 - 5.20 mm. | 4.40 - 4.70 mm. |
| 0.29 - 0.31 ct. | 5.20 - 5.40 mm. | 4.70 - 4.90 mm. |
| 0.33 - 0.36 ct. | 5.30 -5.60 mm. | 4.80 -5.00 mm. |
| 0.38 - 0.41 ct. | 5.60 - 6.00 mm. | 5.00 - 5.40 mm |
| 0.42 - 0.44 ct. | 5.90 - 6.20 mm. | 5.30 - 5.50 mm. |
| 0.46 - 0.49 ct. | 6.10 - 6.30 mm. | 5.50 - 5.70 mm. |
| 0.52 - 0.55 ct. | 6.30 - 6.40 mm. | 5.70 - 5.80 mm. |
| 0.57 - 0.62 ct. | 6.40 - 6.90 mm. | 6.40 - 6.90 mm. |
| 0.67 - 0.74 ct. | 6.90 - 7.10 mm. | 6.80 - 7.10 mm. |
| 0.76 - 0.83 ct. | 7.00 - 7.30 mm. | 7.00 - 7.30 mm. |
| 0.86 - 0.93 ct. | 7.20 - 7.70 mm. | 7.20 - 7.70 mm. |
| 0.95 - 1.09 ct. | 7.60 - 8.20 mm. | 7.60 - 8.25 mm. |
| 1.12 - 1.38 ct | 8.00 - 8.90 mm | 8.00 - 8.90 mm |
