Size/Weight Comparison
Charts How
to use these charts: Gemstones will vary slightly because of the different
densities of the the stone, For example you can see from the first chart
that a 6mm round brilliant diamond might weigh 0.90 ct while a 6mm Ruby in
an equivalent 6mm size would weigh approximately 1.05 cts. These numbers
are estimates only and can vary based on a stones depth, but should still
give you a general idea on how density can effect a stones
weight. ROUND BRILLIANT CUT
STONES GEMSTONE 2mm 3mm 4mm 5mm 6mm 7mm 8mm Alexandrite .04 .12 .35 .63 1.30 2.15 2.90 Amethyst .04 .10 .20 .40 .70 1.30 1.80 Aquamarine .04 .10 .25 .45 .75 1.60 2.40 Citrine .04 .10 .20 .40 .70 1.30 1.80 Diamond .04 .10 .23 .47 .90 1.35 1.90 Emerald .04 .12 .27 .48 .80 1.70 2.50 Garnet .05 .13 .30 .60 1.00 1.60 2.50 Opal .02 .09 .16 .34 .57 .83 1.30 Peridot .05 .12 .26 .50 .85 1.25 2.00 Ruby .05 .15 .34 .65 1.05 1.60 2.25 Sapphire .05 .15 .34 .65 1.05 1.60 2.25 Topaz .04 .11 .30 .56 1.00 1.55 2.50 Tourmaline .04 .12 .24 .45 .75 1.55 2.00 Zircon .06 .17 .36 .69 1.25 1.75 2.60
|
OVAL CUT STONES | |||||||||||
|
GEMSTONE |
5x3 |
6x4 |
7x5 |
8x6 |
9x7 |
10x8 |
11x9 |
12x10 |
14x10 |
16x12 |
18x13 |
|
Alexandrite |
.30 |
.61 |
.80 |
1.45 |
2.00 |
3.60 |
4.25 |
6.00 |
8.90 |
12.50 |
18.00 |
|
Amethyst |
.23 |
.45 |
.85 |
1.25 |
1.75 |
2.40 |
3.20 |
4.50 |
6.50 |
11.00 |
14.00 |
|
Aquamarine |
.20 |
.40 |
.75 |
1.10 |
1.75 |
2.25 |
3.00 |
4.50 |
6.75 |
10.15 |
10.57 |
|
Citrine |
.23 |
.45 |
.85 |
1.25 |
1.75 |
2.40 |
3.25 |
4.20 |
5.20 |
9.00 |
10.75 |
|
Diamond |
.25 |
.50 |
.75 |
1.40 |
2.00 |
3.00 |
4.00 |
5.00 |
8.00 |
11.50 |
16.00 |
|
Emerald |
.28 |
.52 |
.85 |
1.00 |
1.60 |
2.25 |
3.75 |
5.00 |
7.50 |
12.00 |
14.50 |
|
Garnet |
.25 |
.55 |
1.00 |
1.40 |
2.10 |
2.80 |
3.75 |
5.00 |
7.00 |
10.00 |
13.25 |
|
Opal |
.16 |
.28 |
.47 |
.75 |
1.10 |
1.65 |
2.15 |
3.00 |
4.00 |
5.25 |
5.75 |
|
Peridot |
.28 |
.50 |
.95 |
1.35 |
2.00 |
2.50 |
3.50 |
4.00 |
6.00 |
9.50 |
13.00 |
|
Ruby |
.35 |
.60 |
1.00 |
1.55 |
2.20 |
3.15 |
3.80 |
6.00 |
7.25 |
12.00 |
13.00 |
|
Sapphire |
.35 |
.60 |
1.00 |
1.55 |
2.20 |
3.15 |
3.80 |
6.00 |
7.25 |
12.00 |
13.00 |
|
Topaz |
.27 |
.57 |
1.10 |
1.60 |
2.50 |
3.50 |
4.50 |
6.00 |
8.80 |
12.00 |
17.00 |
|
Tourmaline |
.25 |
.50 |
.90 |
1.18 |
2.30 |
2.90 |
3.50 |
5.25 |
6.80 |
8.50 |
12.00 |
|
Zircon |
.40 |
.75 |
1.45 |
2.00 |
2.85 |
4.00 |
5.60 |
7.50 |
8.20 |
13.50 |
14.50 |
|
EMERALD CUT STONES | |||||||||||
|
GEMSTONE |
5x3 |
6x4 |
7x5 |
8x6 |
9x7 |
10x8 |
11x9 |
12x10 |
14x10 |
16x12 |
18x13 |
|
Alexandrite |
.40 |
.70 |
1.30 | ||||||||