Diamond Carat Size Chart

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