Hatton Designs of London
ROUND BRILLIANT DIAMONDS

Please note all the sizes below are approximate.

Millimetres Carat weight Points 1 0.005 0.5 1.3 0.01 1 1.5 0.015 1.5 1.7 0.02 1 1.8 0.025 2.5 2 0.03 3 2.1 0.035 3.5 2.2 0.04 4 2.4 0.05 5 2.5 0.06 6 2.7 0.07 7 2.8 0.08 8 2.9 0.09 9 3 0.1 10 3.1 0.11 11 3.2 0.12 12 3.3 0.14 14 3.4 0.15 15 3.5 0.16 16 3.6 0.17 17 3.7 0.18 18 3.8 0.2 20 3.9 0.22 22 4 0.25 25 4.2 0.3 30 4.4 0.33 33 4.5 0.35 35 4.6 0.38 38 4.8 0.4 40 5 0.5 50 5.4 0.6 60 5.5 0.63 63 5.6 0.65 65 6 0.75 75 6.4 0.95 95 6.6 1 100 6.8 1.17 117 7 1.25 125 7.2 1.33 133 7.5 1.55 155 7.8 1.75 175 8 2 200 8.4 2.15 215 8.6 2.25 225 9 2.75 275 9.4 3 300 9.6 3.15 315 9.8 3.35 335 10 3.5 350 10.2 3.75 375 10.4 4 400 10.6 4.25 425 10.8 4.5 450 11 4.75 475 11.2 5 500 12 6.5 650