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This chart is designed to help you figure out the proper size stone without having to measure each stone individually.
MM | Inches | Round Diamond Carat (approx) | Pearl Plate or Stone Size | MM | Inches |
1 | 0.0394 | 0.005 | PP 3 / SS 0 | 1.00-1.10 | 0.039-0.043 |
1.2 | 0.0472 | 0.008 | PP 4 / SS 1 | 1.10-1.20 | 0.043-0.047 |
1.3 | 0.0512 | 0.01 | PP 5 / SS 2 | 1.20-1.30 | 0.047-0.051 |
1.35 | 0.0531 | 0.0143 | PP 6 / SS 2 | 1.30-1.35 | 0.051-0.053 |
1.4 | 0.0551 | 0.0146 | PP 7 / SS 3 | 1.35-1.40 | 0.053-0.055 |
1.43 | 0.0563 | 0.0149 | PP 8 / SS 3 | 1.40-1.50 | 0.055-0.059 |
1.5 | 0.0591 | 0.015 | PP 9 / SS 4 | 1.50-1.60 | 0.059-0.063 |
1.65 | 0.065 | 0.0181 | PP 10 / SS 4 | 1.60-1.70 | 0.063-0.067 |
1.7 | 0.0669 | 0.02 | PP 11 / SS 5 | 1.70-1.80 | 0.067-0.071 |
1.8 | 0.0709 | 0.025 | PP 12 / SS 5 | 1.80-1.90 | 0.071-0.075 |
1.95 | 0.0768 | 0.0261 | PP 13 / SS 6 | 1.90-2.00 | 0.075-0.079 |
2 | 0.0787 | 0.03 | PP 14 / SS 6 | 2.00-2.10 | 0.079-0.083 |
2.1 | 0.0827 | 0.035 | PP 15 / SS 7 | 2.10-2.20 | 0.083-0.087 |
2.2 | 0.0866 | 0.04 | PP 16 / SS 7 | 2.20-2.30 | 0.087-0.091 |
2.3 | 0.0906 | 0.0418 | PP 17 / SS 8 | 2.30-2.40 | 0.091-0.095 |
2.4 | 0.0945 | 0.05 | PP 18 / SS 8 | 2.40-2.50 | 0.095-0.098 |
2.5 | 0.0984 | 0.06 | PP 19 / SS 9 | 2.50-2.60 | 0.098-0.10 |
2.6 | 0.1024 | 0.0611 | PP 20 / SS 9 | 2.60-2.70 | 0.10-0.106 |
2.7 | 0.1063 | 0.07 | PP 21 / SS 10 | 2.70-2.80 | 0.106-0.11 |
2.8 | 0.1102 | 0.08 | PP 22 / SS 10 | 2.80-2.90 | 0.11 |
2.9 | 0.1142 | 0.09 | PP 23 / SS 11 | 2.90-3.00 | 0.11-0.12 |
3 | 0.1181 | 0.1 | PP 24 / SS 12 | 3.00-3.20 | 0.12-0.13 |
3.1 | 0.122 | 0.11 | |||
3.2 | 0.126 | 0.12 | PP 25 / SS 13 | 3.20-3.30 | 0.13 |
3.3 | 0.1299 | 0.14 | PP 26 / SS 13 | 3.30-3.40 | 0.133 |
3.4 | 0.1339 | 0.15 | PP 27 / SS 14 | 3.40-3.50 | 0.133-0.14 |
3.5 | 0.1378 | 0.16 | PP 28 / SS 14 | 3.50-3.60 | 0.14 |
3.6 | 0.1417 | 0.17 | PP 29 / SS 15 | 3.60-3.70 | 0.14-0.15 |
3.7 | 0.1457 | 0.18 | PP 30 / SS 15 | 3.70-3.80 | 0.15 |
3.8 | 0.1496 | 0.2 | PP 31 / SS 16 | 3.80-4.00 | 0.15-0.16 |
3.9 | 0.1535 | 0.22 | |||
4 | 0.1575 | 0.23 | PP 32 / SS 17 | 4.00-4.10 | 0.16 |
4.1 | 0.1614 | 0.25 | PP 33 / SS 17 | 4.10-4.20 | 01.6-0.17 |
4.2 | 0.1654 | 0.3 | SS 18 | 4.20-4.40 | 0.17 |
4.4 | 0.1732 | 0.33 | SS 19 | 4.40-4.60 | 0.17-0.18 |
4.5 | 0.1772 | 0.35 | |||
4.6 | 0.1811 | 0.375 | SS 20 | 4.60-4.80 | 0.18-0.19 |
4.8 | 0.189 | 0.4 | SS 21 | 4.80-4.90 | 0.19 |
4.9 | 0.1929 | 0.43 | SS 22 | 4.90-5.10 | 0.19-0.20 |
5 | 0.1969 | 0.47 | |||
5.2 | 0.2047 | 0.5 | SS 23 | 5.10-5.27 | 0.20-0.21 |
5.4 | 0.2126 | 0.6 | SS 24 | 5.27-5.44 | 0.21 |
5.5 | 0.2165 | 0.63 | SS 25 | 5.44-5.61 | 0.21-0.22 |
0.2205 | 0.65 | SS 26 | 5.61-5.78 | 0.22-0.23 | |
5.8 | 0.2283 | 0.75 | SS 27 | 5.78-5.96 | 0.23 |
6 | 0.2362 | 0.8 | SS 28 | 5.96-6.14 | 0.23-0.24 |
6.2 | 0.2441 | 0.85 | SS 29 | 6.14-6.32 | 0.24-0.25 |
6.4 | 0.252 | 0.95 | SS 30 | 6.32-6.50 | 0.25-0.26 |
6.5 | 0.2559 | 1 | SS 31 | 6.50-6.68 | 0.26 |
6.6 | 0.2598 | 1.1 | SS 32 | 6.68-6.87 | 0.26-0.27 |
6.8 | 0.2677 | 1.17 | SS 33 | 6.87-7.07 | 0.27-0.28 |
7 | 0.2756 | 1.25 | SS 34 | 7.07-7.27 | 0.28-0.29 |
7.2 | 0.2835 | 1.33 | SS 35 | 7.27-7.48 | 0.29-0.30 |
7.4 | 0.2913 | 1.5 | |||
7.6 | 0.2992 | 1.6 | SS 36 | 7.48-7.70 | 0.3 |
7.8 | 0.3071 | 1.75 | SS 37 | 7.70-7.93 | 0.30-0.31 |
8 | 0.315 | 1.9 | SS 38 | 7.93-8.16 | 0.31-0.32 |
8.2 | 0.3228 | 2 | SS 39 | 8.16-8.41 | 0.32-0.33 |
8.4 | 0.3307 | 2.15 | SS 40 | 8.41-8.67 | 0.33-0.34 |
8.6 | 0.3386 | 2.25 | SS 41 | 8.67-8.95 | 0.34-0.35 |
8.8 | 0.3465 | 2.5 | |||
9 | 0.3543 | 2.65 | SS 42 | 8.95-9.23 | 0.35-0.36 |
9.2 | 0.3622 | 2.85 | SS 43 | 9.23-9.53 | 0.36-0.38 |
9.4 | 0.3701 | 3 | |||
9.6 | 0.378 | 3.15 | SS 44 | 9.53-9.85 | 0.38-0.39 |
9.8 | 0.3858 | 3.35 | SS 45 | 9.85-10.19 | 0.39-0.40 |
10 | 0.3937 | 3.5 |