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Round Diamond Size Chart Size (mm) Weight (ct) Size (mm) Weight (ct) 0.8 0.0035 2.4 0.0618 0.9 0.0040 2.4 0.0630 1.00 0.0045 2.5 0.0655 1.05 0.0050 2.5 0.0690 1.05 0.0055 2.6 0.0726 1.10 0.0063 2.6 0.0745 1.10 0.0069 2.7 0.0800 1.15 0.0074 2.7 0.0850 1.15 0.0078 2.8 0.0910 1.20 0.0083 2.8 0.0950 1.20 0.0087 2.9 0.1020 1.25 0.0091 2.9 0.1083 1.25 0.0096 3.0 0.1110 1.30 0.0103 3.0 0.1150 1.30 0.0108 3.1 0.1200 1.35 0.0115 3.1 0.1290 1.35 0.0125 3.2 0.1340 1.40 0.0135 3.2 0.1417 1.40 0.0140 3.3 0.1470 1.45 0.0145 3.3 0.1533 1.45 0.0154 3.4 0.1580 1.50 0.0159 3.4 0.1646 1.50 0.0165 3.5 0.1680 1.55 0.0172 3.6 0.1820 1.55 0.0188 3.7 0.1989 1.60 0.0195 3.8 0.2060 1.60 0.0210 3.9 0.2300 1.70 0.0215 4.0 0.2460 1.70 0.0240 4.1 0.2550 1.80 0.0267 4.2 0.2650 1.80 0.0280 4.3 0.3000 1.90 0.0305 4.4 0.3200 1.90 0.0320 4.5 0.3400 2.00 0.0347 4.75 0.44 2.00 0.0380 5.00 0.46 2.10 0.0417 5.25 0.56 2.10 0.0430 5.5 0.66 2.20 0.0464 5.75 0.76 2.20 0.0480 6.00 0.84 2.3 0.0540 6.25 0.93 2.3 0.0550 6.5 1.03 6.75 1.24
Princess Cut Diamond Chart Size (mm) Weight (ct) Size (mm) Weight (ct) Size (mm) Weight (ct) Size (mm) Weight (ct) 1.2 x 1.2 0.012 2.1 x 2.1 0.055 2.9 x 2.9 0.149 3.8 x 3.7 0.325 1.2 x 1.1 0.011 2.1 x 2.0 0.052 2.9 x 2.8 0.136 3.8 x 3.6 0.319 1.3 x 1.3 0.014 2.1 x 1.9 0.049 2.9 x 2.7 0.126 3.9 x 3.9 0.347 1.3 x 1.2 0.013 2.1 x 1.8 0.046 2.9 x 2.6 0.118 3.9 x 3.8 0.338 1.4 x 1.4 0.020 2.2 x 2.2 0.064 3.0 x 3.0 0.172 3.9 x 3.7 0.329 1.4 x 1.3 0.019 2.2 x 2.1 0.060 3.0 x 2.9 0.153 4 0.39 1.4 x 1.2 0.019 2.2 x 2.0 0.057 3.0 x 2.8 0.142 4.25 0.44 1.4 x 1.1 0.018 2.2 x 1.9 0.053 3.0 x 2.7 0.133 4.5 0.56 1.5 x 1.5 0.022 2.3 x 2.3 0.074 3.1 x 3.1 0.185 4.75 0.64 1.5 x 1.4 0.021 2.3 x 2.2 0.070 3.1 x 3.0 0.170 5 0.71 1.5 x 1.3 0.020 2.32 x 2.1 0.066 3.1 x 2.9 0.159 5.25 0.75 1.5 x 1.2 0.019 2.3 x 2.0 0.060 3.1 x 2.8 0.150 5.5 0.99 1.6 x 1.6 0.025 2.4 x 2.4 0.085 3.2 x 3.2 0.198 5.75 1.11 1.6 x 1.5 0.023 2.4 x 2.3 0.078 3.2 x 3.1 0.185 6 1.25 1.6 x 1.4 0.022 2.4 x 2.2 0.073 3.2 x 3.0 0.177 6.25 1.39 1.6 x 1.3 0.021 2.4 x 2.1 0.068 3.2 x 2.9 0.170 6.5 1.59 1.7 x 1.7 0.029 2.5 x 2.5 0.097 3.3 x 3.3 0.205 6.75 1.75 1.7 x 1.6 0.027 2.5 x 2.4 0.089 3.3 x 3.2 0.202 7 1.96 1.7 x 1.5 0.025 2.5 x 2.3 0.083 3.3 x 3.1 0.198 7.25 2.01 1.7 x 1.4 0.023 2.5 x 2.2 0.077 3.4 x 3.4 0.241 7.5 2.4 1.8 x 1.8 0.034 2.6 x 2.6 0.110 3.4 x 3.3 0.235 7.75 2.74 1.8 x 1.7 0.032 2.6 x 2.5 0.100 3.4. x 3.2 0.230 8 3.01 1.8 x 1.6 0.030 2.6 x 2.4 0.092 3.5 x 3.5 0.264 8.25 3.24 1.8 x 1.5 0.028 2.6 x 2.3 0.086 3.5 x 3.4 0.252 8.5 3.67 1.9 x 1.9 0.040 2.7 x 2.7 0.123 3.5 x 3.3 0.248 8.75 4.1 1.9 x 1.8 0.038 2.7 x 2.6 0.110 3.6 x 3.6 0.269 9 4.12 1.9 x 1.7 0.036 2.7 x 2.5 0.102 3.6 x 3.5 0.262 9.5 5.09 1.9 x 1.6 0.034 2.7 x 2.4 0.095 3.6 x 3.4 0.256 9.75 5.36 2.0 x 2.0 0.051 2.8 x 2.8 0.136 3.7 x 3.7 0.321 10 5.62 2.0 x 1.9 0.045 2.8 x 2.7 0.123 3.7 x 3.6 0.316 10.25 5.76 2.0 x 1.8 0.043 2.8 x 2.6 0.114 3.7 x 3.5 0.290 10.5 5.9 2.0 x 1.7 0.041 2.8 x 2.5 0.106 3.8 x 3.8 0.327 11 7.44 11.5 9.44 12 9.52
Cushion Shape Diamonds Size (mm) Weight (ct) Size (mm) Weight (ct) Size (mm) Weight (ct) 4 0.25 6.5 1.03 10 3.87 4.5 0.36 6.75 1.24 10.5 4.41 5 0.46 7 1.28 11 4.91 5.25 0.56 7.5 1.67 11.5 5.85 5.5 0.66 8 2.04 12 6.84 5.75 0.76 8.5 2.43 13 8.51 6 0.84 9 2.75 14 10.49 6.25 0.93 9.5 3.35 15 12.89
Emerald Shape Diamonds Size (mm) Weight (ct) Size (mm) Weight (ct) Size (mm) Weight (ct) 3 x 2 0.1 7 x 5 1.06 11 x 9 5.21 3.5 x 2 0.12 7.25 x 5.25 1.24 12 x 8 5.34 4 x 2 0.15 7.5 x 5.5 1.45 12 x 10 6 4 x 3 0.2 8 x 6 1.74 13 x 9 6.38 5 x 3 0.29 8.5 x 6.5 2.17 14 x 8 6.25 5.5. x 3.5 0.46 9 x 7 2.62 14 x 10 8.48 5.5 x 4 0.48 9.5 x 7.5 3.21 13 x 11 9.13 6 x 4 0.66 10 x 7 3.01 14 x 12 11.26 6.5 x 4.5 0.88 10 x 8 3.79 16 x 12 14.22
Oval Shape Diamonds Size (mm) Weight (ct) Size (mm) Weight (ct) Size (mm) Weight (ct) 4.5 x 3.5 0.21 8 x 6 1.21 14 x 10 5.81 5 x 3 0.21 8.5 x 6.5 1.46 13 x 11 6.05 5 x 4 0.32 9 x 6 1.41 14 x 12 8.21 5.5 x 3.5 0.33 9 x 7 1.86 15 x 12 8.75 6 x 4 0.43 10 x 8 2.54 16 x 12 9.32 6.5 x 4.5 0.65 10.5 x 8.5 2.88 16 x 14 11.88 6.5 x 5 0.61 11 x 9 3.85 18 x 13 12.86 7 x 5 0.76 12 x 8 4.99 20 x 15 14.96 7.5 x 5.5 0.98 12 x 10 5.05
Marquise Shape Diamonds Size (mm) Weight (ct) Size (mm) Weight (ct) Size (mm) Weight (ct) 3 x 1.5 0.025 7 x 3 0.3 12 x 6.5 1.71 3.5 x 1.75 0.065 7 x 3.5 0.33 13 x 6.5 2.11 3.5 x 2 0.07 7.5 x 3.5 0.35 14 x 7 2.48 4 x 2 0.1 7 x 4 0.4 14 x 8 3 3.75 x 1.75 0.11 8 x 4 0.47 15 x 7 3.09 4.5 x 2.25 0.12 9 x 4.5 0.71 15 x 7.5 3.12 5 x 2.25 0.14 9 x 5 0.76 15 x 8 3.44 5 x 3 0.2 9.5 x 5 0.85 16 x 8 3.86 5.5 x 2.75 0.16 10 x 5 0.95 17 x 8.5 4.88 5.5 x 3 0.18 11 x 6.5 1.25 17.5 x 10 5.5 6 x 3 0.25 11.5 x 6 1.33 20 x 8 7.08 6.5 x 3 0.29 12 x 6 1.62 20 x 10 7.94 20 x 11 9.5
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