Melee size guide

Millimeter to carat weight reference for round natural melee.

Size	≈ ct per stone	≈ stones per ct
0.90 mm	0.003	305	Shop
1.00 mm	0.005	222	Shop
1.10 mm	0.006	167	Shop
1.15 mm	0.007	146	Shop
1.20 mm	0.008	129	Shop
1.25 mm	0.009	114	Shop
1.30 mm	0.01	101	Shop
1.35 mm	0.011	90	Shop
1.40 mm	0.012	81	Shop
1.45 mm	0.014	73	Shop
1.50 mm	0.015	66	Shop
1.55 mm	0.017	60	Shop
1.60 mm	0.018	54	Shop
1.70 mm	0.022	45	Shop
1.80 mm	0.026	38	Shop
1.90 mm	0.031	32	Shop
2.00 mm	0.036	28	Shop
2.10 mm	0.042	24	Shop
2.20 mm	0.048	21	Shop
2.30 mm	0.055	18	Shop
2.40 mm	0.062	16	Shop
2.50 mm	0.07	14	Shop
2.60 mm	0.079	13	Shop
2.70 mm	0.089	11	Shop
2.80 mm	0.099	10	Shop
2.90 mm	0.11	9	Shop
3.00 mm	0.122	8	Shop
3.10 mm	0.134	7	Shop
3.20 mm	0.147	7	Shop
3.30 mm	0.162	6	Shop
3.40 mm	0.177	6	Shop
3.50 mm	0.193	5	Shop
3.60 mm	0.21	5	Shop
3.70 mm	0.228	4	Shop
3.80 mm	0.247	4	Shop
3.90 mm	0.267	4	Shop
4.00 mm	0.288	3	Shop
4.10 mm	0.31	3	Shop
4.20 mm	0.333	3	Shop
4.30 mm	0.358	3	Shop
4.40 mm	0.383	3	Shop
4.50 mm	0.41	2	Shop
4.60 mm	0.438	2	Shop
4.70 mm	0.467	2	Shop

Weights are approximate for well-cut round brilliants.