If anything goes beyond expectations, we will send you the expected shipping time via a follow-up email.
Please contact us if you need something expedited or with any questions regarding to shipping .Since the varying densities of different stone materials and also the varying depths of different cutting styles can result in a significantly different, even between stones with a similar carat weight.
Estimating Weights for Standard Faceted Cut Gemstones
Rounds | ![]() |
Squares / Pricess |
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Ovals | ![]() |
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Size | Weight | Size | Weight | Size | Weight |
1.6 mm | .02 carat | 3.5 mm | .25 carat | 5 x 3 mm | .25 carat |
2 mm | .03 carat | 4 mm | .40 carat | 6 x 4 mm | .5 carat |
2.5 mm | .06 carat | 4.5 mm | .50 carat | 7 x 5 mm | 1.0 carat |
3 mm | .10 carat | 5 mm | .75 carat | 8 x 6 mm | 1.5 carat |
3.5 mm | .16 carat | 5.5 mm | 1.0 carat | 9 x 7 mm | 2.5 carat |
4 mm | .25 carat | 6 mm | 1.3 carat | 10 x 8 mm | 3.0 carat |
4.5 mm | .33 carat | 6.5 mm | 1.5 carat | 11 x 9 mm | 4.0 carat |
5 mm | .50 carat | 7 mm | 2.05 carat | 12 x 10 mm | 5.0 carat |
5.5 mm | .65 carat | 8 mm | 2.9 carat | 14 x 10 mm | 6.0 carat |
6 mm | .75 carat | 9 mm | 4.4 carat | 14 x 12 mm | 8.0 carat |
6.5 mm | 1.0 carat | 9.5 mm | 5.0 carat | 16 x 12 mm | 10.5 carat |
7 mm | 1.25 carat | 10 mm | 6.0 carat | 18 x 13 mm | 14.2 carat |
8 mm | 2.0 carat | 11 mm | 8.0 carat | ||
9 mm | 2.75 carat | 12 mm | 10.35 carat | ||
10 mm | 3.5 carat | 13 mm | 13.2 carat | ||
11 mm | 4.6 carat | 14 mm | 16.5 carat | ||
12 mm | 6.0 carat | 15 mm | 20.25 carat | ||
13 mm | 7.75 carat | 16 mm | 24.6 carat | ||
14 mm | 9.65 carat | ||||
15 mm | 11.85 carat | ||||
16 mm | 16 carat | ||||
17 mm | 17.25 carat | ||||
18 mm | 20.5 carat | ||||
19 mm | 24.0 carat | ||||
20 mm | 28.0 carat | ||||
21 mm | 34.8 carat | ||||
22 mm | 41.8 carat | ||||
23 mm | 49.8 carat | ||||
24 mm | 57.9 carat | ||||
25 mm | 68.7 carat |
Emerald | ![]() |
Pear | ![]() |
Marquis | ![]() |
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6 x 4 mm | .5 carat | 6 x 5 mm | .7 carat | 4 x 2 mm | .10 carat |
7 x 5 mm | 1.0 carat | 7 x 5 mm | .75 carat | 5 x 2.5 mm | .25 carat |
8 x 6 mm | 1.5 carat | 8 x 5 mm | 1.0 carat | 6 x 3 mm | .30 carat |
9 x 7 mm | 2.5 carat | 9 x 6 mm | 1.5 carat | 8 x 4 mm | .75 carat |
10 x 8 mm | 3.0 carat | 10 x 7 mm | 2.0 carat | 10 x 5 mm | 1.0 carat |
11 x 9 mm | 4.0 carat | 11 x 7 mm | 2.25 carat | 12 x 6 mm | 2.0 carat |
12 x 10 mm | 5.0 carat | 12 x 8 mm | 3.0 carat | 14 x 7 mm | 3.0 carat |
14 x 10 mm | 6.0 carat | 13 x 9 mm | 3.5 carat | 16 x 8 mm | 4.0 carat |
14 x 12 mm | 8.0 carat | 15 x 10 mm | 5.5 carat | 18 x 9 mm | 6.0 carat |
16 x 12 mm | 10.5 carat | 16 x 12 mm | 8.6 carat | 20 x 10 mm | 8.5 carat |
18 x 13 mm | 14.2 carat | 18 x 13 mm | 12 carat | ||
20 x 15 mm | 20.3 carat | 20 x 15 mm | 17.3 carat | ||
25 x 18 mm | 52.2 carat | 22 x 15 mm | 18.7 carat | ||
25 x 18 mm | 30.6 carat | ||||
30 x 22 mm | 54.5 carat |
Mass-produced jewelry settings come in standard gem sizes.
If a gem won’t fit in a standard setting, you should have a setting custom made.