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Weight Chart Of Gemstone

WEIGHT CHART OF GEMSTONE (Approximate Weight in Carats)
Oval-;mm;	4*3	5*3	5*4	6*4	7*5	8*6	9*7	10*8	11*9	12*10	14*10	16*12	18*13
Amethyst/Citrine	0.15	0.21	0.33	0.45	0.76	1.10	1.60	2.40	3.20	4.10	6.20	11.00	14.00
Aquamarine	0.16	0.22	0.34	0.42	0.61	1.00	1.50	2.30	3.00	4.00	6.10	10.70	13.60
Emerald	0.17	0.25	0.35	0.47	0.75	1.10	1.65	2.40	3.50	4.50	7.50
Diamond	0.17	0.25	0.37	0.50	0.75	1.40	2.00	3.00	4.00	5.00	8.00
Garnet	0.22	0.27	0.40	0.55	1.00	1.40	2.10	2.80	3.70	5.00	7.10	12.00	15.20
Opal	0.10	0.16	0.22	0.28	0.47	0.78	1.10	1.60	2.10	3.00	4.00	5.20	6.75
Peridot	6.17	0.25	0.38	0.50	0.76	1.40	2.00	2.70	3.50	4.50	6.40	9.50	13.00
Ruby/Sapphire	0.24	0.31	0.50	0.60	1.00	1.60	2.20	3.40	4.60	5.40	7.20	12.00	17.50
Topaz	0.21	0.27	0.42	0.57	0.85	1.50	2.00	3.20	4.40	5.00	6.80	11.26	16.50
Tourmaline	0.15	0.25	0.37	0.50	0.75	1.20	2.30	2.90	3.50	4.70	6.30	11.10	14.00
Zircon	0.25	0.40	0.55	0.75	1.20	2.00	2.90	4.00	5.40	7.20	8.80	14.50	19.50

BIRTHSTONES and what They Signify

MONTH	GEMSTONE	SIGNIFICANCE
January	Garnet	Constancy
February	Amethyst	Sincerity
March	Aquamarine	Wisdom
April	Diamond	Innocence
May	Emerald	Love
June	Alexandrite	Wealth
July	Ruby	Freedom
August	Peridot	Friendship
September	Sapphire	Truth
October	Tourmaline	Hope
November	Golden Topaz	Loyalty
December	Blue Zircon	Success

WEIGHT CHART OF GEMSTONE (Approximate Weight in Carats)
Round-;mm;	2	2.5	3	3.5	4	5	6	7	8	9	10
Amethyst/Citrine	0.03	0.05	0.10	0.15	0.24	0.40	0.70	1.10	1.80	2.55	3.30
Aquamarine	0.03	0.05	0.08	0.15	0.22	0.40	0.42	1.20	2.00	2.75	3.50
Emerald	0.03	0.06	0.10	0.17	0.26	0.52	0.95	1.50	2.20	2.95	3.75
Diamond	0.04	0.07	0.10	0.17	0.23	0.50	0.90	1.40	1.90	3.05	4.25
Garnet	0.04	0.07	0.11	0.23	0.31	0.56	1.00	1.60	2.20	2.75	4.15
Opal	0.02	0.04	0.06	0.11	0.16	0.34	0.57	0.83	1.40	1.95	2.55
Peridot	0.03	0.05	0.11	0.15	0.30	0.53	0.85	1.20	2.00	2.39	4.38
Ruby/Sapphire	0.05	0.09	0.14	0.22	0.38	0.65	1.20	1.80	2.40	3.45	4.50
Topaz	0.04	0.09	0.11	0.20	0.34	0.56	1.00	1.50	2.00	3.30	4.40
Tourmaline	0.04	0.08	0.12	0.17	0.25	0.45	0.8	1.30	2.00	2.60	3.35
Zircon	0.06	0.10	0.16	0.26	0.40	0.69	1.40	2.00	2.80	3.60	4.80

WEIGHT CHART OF GEMSTONE (Approximate Weight in Carats)
Octagon-;mm;	5×3	6*4	7*5	8*6	9*7	10*8	11*9	12*10	14*10	16*12	18*13
Amethyst/Citrine	0.27	0.55	0.95	1.50	2.30	3.00	4.20	5.60	7.60	10.50	17.00
Aquamarine	0.28	0.53	1.00	1.60	2.40	3.10	4.30	5.80	7.90	10.90	17.00
Emerald	0.32	0.60	1.00	1.75	2.50	3.30	4.50	5.80	8.00	11.00	17.00
Diamond	0.25	0.50	1.00	1.60	2.70	4.00	5.00	6.70	9.00	13.00	19.50
Garnet	0.34	0.68	1.10	1.70	2.70	3.70	4.80	6.40	8.50	15.50	21.00
Opal	0.27	0.55	0.95	1.50	2.30	3.00	4.20	5.60	7.60	10.50	17.00
Peridot	0.33	0.60	1.00	1.60	2.50	3.50	4.80	6.30	8.80	13.00	19.00
Ruby/Sapphire	0.45	0.75	1.20	1.75	2.90	4.00	6.00	7.30	9.90	16.50	22.00
Topaz	0.35	0.65	1.10	1.70	2.60	3.80	5.20	7.00	9.10	14.00	20.00
Tourmaline	0.30	0.60	1.00	1.60	2.50	3.50	4.60	6.20	8.70	13.00	18.50
Zircon	0.44	0.85	1.40	2.40	3.50	4.70	6.60	8.00	11.40	18.30	26.00

WEIGHT CHART OF GEMSTONE ( APPROXIMATE WEIGHT IN CARAT)

Pear-;mm;	5*3	6*4	7*5	8*5	9*6	10*7	12*8	15*10
Amethyst/Citrine	0.18	0.32	0.65	0.80	1.25	1.80	3.00	5.00
Aquamarine	0.21	0.33	0.67	0.90	1.30	1.85	2.95	5.60
Emerald	0.23	0.41	0.65	0.95	1.40	2.40	3.40	7.00
Diamond	0.22	0.40	0.75	0.95	1.40	2.00	3.20
Garnet	0.25	0.40	1.00	1.15	1.50	1.90	3.35	6.00
Opal	0.13	0.22	0.35	0.50	0.70	1.00	1.30	2.26
Peridot	0.25	0.40	0.70	0.90	1.10	1.40	3.20	5.75
Ruby/Sapphire	0.30	0.50	0.85	1.10	1.80	2.50	4.00	7.50
Topaz	0.29	0.45	0.95	1.00	1.70	2.40	3.50	6.60
Tourmaline	0.25	0.40	0.65	0.90	1.10	2.00	2.90	5.80
Zircon	0.32	0.60	1.00	1.30	2.60	3.50	4.50	8.45

Marquise-;mm;	4*2	5*2.5	6*3	7*3.5	8*4	10*5	12*6
Amethyst/Citrine	0.07	0.15	0.20	2.31	0.48	0.95	1.50
Aquamarine	0.09	0.13	0.21	0.33	0.50	1.00	1.60
Emerald	0.08	0.16	0.25	0.37	0.60	1.10	1.80
Diamond	0.12	0.18	0.25	0.34	0.50	1.00	1.75
Garnet	0.10	0.20	0.30	0.40	0.60	1.20	2.10
Opal	0.06	0.11	0.16	0.24	0.37	0.59	1.00
Peridot	0.09	0.15	0.24	0.34	0.50	0.95	2.00
Ruby/Sapphire	0.09	0.20	0.32	0.44	0.75	1.20	2.20
Topaz	0.10	0.19	0.28	0.42	0.68	1.10	2.00
Tourmaline	0.09	0.15	0.24	0.32	0.57	1.05	1.75
Zircon	0.13	0.25	0.37	0.53	0.75	1.40	2.35

ANTWERP DIAMOND SIEVE SIZES

Plate Size	No of Stones per Carat	Weight	MM Size
0	200	_1/2pt	1.10-
1 1^1/2 2 2^1/2 3	175 150 125 110/115 100	1pt	1.15 1.20 1.25 1.30 1.35
3^1/2 4 4^1/2 5 5^1/2	90 80 70 60 50	2pt	1.40 1.45 1.50 1.55 1.60
6 6^1/2 7 7^1/2	48 45 35 33	3pt	1.70 1.80 1.90 2.00
8 8^1/2	30 25	4pt	2.10 2.20
9 9^1/2	22 20	5pt	2.30 2.40
10 10^1/2 11	18 17 16	6/7pt	2.50 2.60 2.70
11^1/2 12	15 13	7/8pt	2.80 2.90
12^1/2	11	9 pt	3.00
13	10	10pt	3.10
13^1/2	8/9	11 pt	3.20
14	8	12 pt	3.30
14^1/2	7.5	13 pt	3.40
15	6.5	15 pt	3.50
15^1/2	6	17 pt	3.60
16	5.5	18 pt	3.70
16^1/2	5^1/4	19 pt	3.80
17	4^3/4	21 pt	3.90
17^1/2	4^1/2	22 pt	4.00
18	4^1/2	23 pt	4.10