Contact us
Search for:

GEMS N GEMS

All kinds of loose gemstones at factory prices

Use gmsngms10 coupon code &
Get 10% OFF

LOOSE GEMSTONES

Cubic Zirconia Weight Chart

Cubic Zirconia Weight Chart

Use this chart to determine the approximate weight of particular CZ size and compare it to diamond weight

Round

Pear

Oval

Heart

Marquise

Princess

Trillion

Emerald

Tringle

Radiant

Round	C.Z. weight	Diamond weight
1.25	0.013	0.01
1.5	0.023	0.015
1.75	0.037	0.02
2	0.06	0.03
2.25	0.08	0.04
2.5	0.1	0.05
2.75	0.15	0.08
3	0.18	0.11
3.25	0.24	0.14
3.5	0.29	0.17
3.75	0.36	0.21
4	0.43	0.25
4.25	0.48	0.28
4.5	0.61	0.36
4.75	0.74	0.44
5	0.79	0.46
5.25	0.95	0.56
5.5	1.13	0.66
5.75	1.3	0.76
6	1.43	0.84
6.25	1.58	0.93
6.5	1.75	1.03
6.75	2.11	1.24
7	2.17	1.28
4	0.4	0.24
7.5	2.84	1.67
7.75	2.97	1.75
8	3.46	2.04
8.25	3.58	2.11
8.5	4.13	2.43
8.75	4.34	2.55
9	4.68	2.75
9.25	5.18	3.05
9.5	5.69	3.35
9.75	6.13	3.61
10	6.58	3.87
10.25	7.08	4.16
10.5	7.5	4.41
10.75	7.55	4.44
11	8.35	4.91
11.25	9.34	5.49
11.5	9.94	5.85
12	11.62	6.84
12.25	12.34	7.26
12.5	12.52	7.36
12.75	12.78	7.52
13	14.47	8.51
13.5	16.2	9.53
14	17.84	10.49
15	21.92	12.89
16	27.25	16.03
17	33.55	19.74
18	38.6	22.71
19	41.78	24.58
20	50.22	29.54
22	67.43	39.66
25	99.18	58.34
30	181.77	106.92
40	374.15	220.09

Pear	C.Z. weight	Diamond weight
5×4	0.6	0.35
6 x 4	0.67	0.39
6.50 x 4.50	0.97	0.57
7 x 5	1.21	0.71
8 x 5	1.38	0.81
8.5 x 5.5	1.83	1.08
9 x 6	2.26	1.33
9 x 7	2.98	1.75
3.25	0.24	0.14
10 x 7	3.06	1.8
10 x 8	4.19	2.46
11 x 7.50	4.44	2.61
11 x 8	5.1	3
12 x 8	5.06	2.98
12 x 9	5.85	3.44
13 x 8	5.04	2.98
14 x 8	5.9	3.47
13 x 9	6.99	4.11
14 x 9	7.01	4.12
15 x 9	8.6	5.06
14 x 10	9.2	5.41
13 x 11	9.61	5.65
15 x 10	9.78	5.75
16 x 10	10.66	6.27
17 x 10	10.99	6.46
15 x 11	12.52	7.36
17 x 11	13.68	8.05
18 x 11	13.84	8.14
16 x 12	15.29	8.99
18 x 12	15.9	9.35
18.5 x 12	17.9	10.53
18 x 13	19.83	11.66
19 x 12	17	10
19 x 13	20.79	12.23
20 x 14	24.92	14.66
23 x 13	25.89	15.23
22 x 14	26.3	15.47
23 x 14	26	15.29
25 x 15	30.02	17.66
25 x 20	64	37.65

Oval	C.Z. weight	Diamond weight
5 x 3	0.35	0.21
5 x 4	0.55	0.32
6 x 4	0.73	0.43
6 x 5	1.04	0.61
7 x 5	1.3	0.76
7.5 x 5.5	1.67	0.98
8 x 6	2.06	1.21
9 x 6	2.4	1.41
9 x 7	3.16	1.86
10 x 8	4.31	2.54
12 x 8	5.09	2.99
10.5 x 8.5	4.9	2.88
11 x 9	6.54	3.85
12 x 10	8.59	5.05
14 x 10	9.87	5.81
13 x 11	10.28	6.05
14 x 8	5.9	3.47
14 x 12	13.96	8.21
15 x 12	14.89	8.76
16 x 12	15.84	9.32
18 x 13	21.86	12.86
20 x 15	32.17	18.92
22 x 16	40.84	24.02

Heart	C.Z. weight	Diamond weight
4	0.4	0.24
4.5	0.57	0.34
5	0.75	0.44
5.5	1.03	0.61
6	1.25	0.74
6.25	1.41	0.83
8 x 6	2.06	1.21
6.5	1.58	0.93
7	1.92	1.13
7.5	2.71	1.59
8	2.9	1.71
9	4.1	2.41
9.5	4.93	2.9
10	5.38	3.16
11	7.5	4.41
12	9.63	5.66
13	13.4	7.88
14	15.95	9.38
15	18.34	10.79
16	22.56	13.27
18	35.5	20.88
20	42.01	24.71

Marquise	C.Z. weight	Diamond weight
4 x 2	0.15	0.08
4.5	0.57	0.34
5	0.75	0.44
5 x 2.5	0.24	0.14
6 x 3	0.41	0.24
6.5 x 3.5	0.53	0.31
7 x 3.5	0.6	0.35
8 x 3.5	0.69	0.41
8 x 4	0.8	0.47
9 x 4.5	1.2	0.71
10 x 5	1.62	0.95
11 x 5.5	2.12	1.25
12 x 6	2.75	1.62
13 x 6.5	3.6	2.11
14 x 7	4.22	2.48
15 x 7.5	5.25	3.09
16 x 8	6.57	3.86
14	15.95	9.38
17 x 8.5	8.3	4.88
18 x 9	9.61	5.65
20 x 10	13.49	7.94
22 x 11	16.28	9.58
30 x 15	36.5	21

Square /Princess	C.Z. weight	Diamond weight
3	0.3	0.18
3.25	0.44	0.26
3.5	0.5	0.29
3.75	0.53	0.31
4	0.66	0.39
4.25	0.74	0.44
4.5	0.95	0.56
4.75	1.08	0.64
5	1.21	0.71
5.5	1.68	0.99
6	2.1	1.24
6.5	2.71	1.59
7	3.33	1.96
7.5	4.08	2.4
7.75	4.66	2.74
8	5.12	3.01
8.25	5.5	3.24
8.5	6.24	3.67
8.75	6.97	4.1
9	7.01	4.12
9.5	8.65	5.09
9.75	9.12	5.36
10	9.56	5.62
10.25	10.19	5.99
11	12.64	7.44
11.5	16.05	9.44
12	16.18	9.52
13	21.86	12.86
14	25.75	15.15
16	40.94	24.08
18	55.14	32.44
20	72.52	42.66
22	99.73	58.66

Trillion	C.Z. weight	Diamond weight
3.5	0.28	0.16
3.75	0.32	0.19
4	0.39	0.23
4.25	0.46	0.27
4.5	0.53	0.31
4.75	0.63	0.37
5	0.72	0.42
5.25	0.83	0.49
5.5	0.93	0.55
5.75	1.08	0.64
6	1.19	0.7
6.25	1.28	0.75
6.5	1.55	0.91
6.75	1.66	0.98
7	1.87	1.1
7.5	2.06	1.21
8	2.97	1.75
8.5	3	1.76
9	3.99	2.35
10	5.3	3.12
11	6.22	3.66
12	8.33	4.9
13	10.91	6.42

Emerald	C.Z. weight	Diamond weight
5 x 3	0.5	0.29
6 x 4	1.13	0.66
6.5 x 4.5	1.49	0.88
7 x 5	1.81	1.06
8 x 6	2.95	1.74
8.5 x 6.5	3.69	2.17
9 x 7	4.46	2.62
9.5 x 7.5	5.46	3.21
10 x 8	6.44	3.79
12 x 8	8.13	4.78
11 x 9	8.85	5.21
13 x 9	10.84	6.38
12 x 10	11.82	6.95
14 x 10	14.42	8.48
13 x 11	15.52	9.13
14 x 12	19.15	11.26
15 x 11	19.51	11.48
16 x 12	24.18	14.22
18 x 13	32.86	19.33
20 x 15	44.03	25.9

Triangle	C.Z. weight	Diamond weight
3	0.21	0.12
3.5	0.3	0.18
4	0.4	0.24
4.25	0.54	0.32
4.5	0.63	0.37
5	0.76	0.45
5.25	0.9	0.53
5.5	1.13	0.66
5.75	1.2	0.71
6	1.3	0.76
6.25	1.46	0.86
6.5	1.6	0.94
6.75	1.73	1.02
7	1.89	1.11
7.25	2.25	1.32
7.5	2.47	1.45
7.75	2.88	1.69
8	3.04	1.79
8.25	3.16	1.86
9	3.66	2.15
9.25	4.32	2.54
9.5	5.13	3.02
9.75	5.52	3.25
10	5.98	3.52
10.25	6.17	3.63
11	8.05	4.74
12	10.25	6.03
13	13.8	8.12
14	15.94	9.83
15	17.92	10.54
20	49.44	29.08
25	89.96	52.92

Radiant	C.Z. weight	Diamond weight
4.50 x 3.50	0.58	0.34
5 x 3	0.52	0.31
6 x 3	0.7	0.41
6 x 4	1.03	0.6
6.50 x 4.50	1.41	0.83
7 x 5	1.94	1.14
7.5 x 5.5	2.5	1.47
8 x 6	2.96	1.74
8.5 x 6.5	3.8	2.24
9 x 7	4.46	2.62
9.50 x 7.50	5.4	3.18
10 x 8	5.94	3.49
11 x 9	8.58	5.05
12 x 9	10.3	6.06
11.50 x 10	10.97	6.45
12 x 10	11.55	6.79
14 x 10	14.4	8.47
13 x 11	15.86	9.33
13.50 x 11.50	17.32	10.19
14 x 12	20.64	12.14
20 x 10	22.85	13.44
16 x 12	23.08	13.58
18 x 13	33.68	19.81
20 x 15	47.86	28.15
24 x 16	69.6	40.94