Special Order Fine Jewelry by Mark Somers

Graduate Gemologist

mark@marksomersjeweler.com                                                                                                (406) 607 9384



Carat Weight Round mm Pear mm Marquise mm Oval mm Octagon mm Heart mm Trillion mm Square mm
.005 1.0
.0067 1.1
.0075 1.2
.01 1.3
.012 1.4
.015 1.5
.017 1.6
.02 1.7
.025 1.8
.027 1.9
.03 2.0 1.5 x 1.5
.035 2.1 2.5 x 1.25
.04 2.2 3 x 1.5 1.75 x 1.75
.045 2.3
.05 2.4
.06 2.5 3.5 x 1.75 2 x 2
.065 2.6
.07 2.7 3.5 x 2 2.25 x 2.25
.08 2.8 2.8 x 2.1
.09 2.9 3 x 2.5 4 x 2
.10 3.0 3 x 3 x 3 2.5 x 2.5
.11 3.1 4.25 x 2.25
.12 3.2 4 x 2.5 3.3 x 2.5 3 x 3
.14 3.3 4 x 3 4.5 x 2.5 3.5 x 3.5 x 3.5 2.75 x 2.75
.15 3.4 5 x 2.5 3.5 x 2.6
.16 3.5 4.5 x 3
.17 3.6 3 x 3
.18 3.7 4 x 4 x 4
.20 3.8 5 x 3 5 x 3 4 x 3 3.9 x 2.9 3.5 x 3.5 3.25 x 3.25
.22 3.9
.23 4.0 3.5 x 3.5
.25 4.1 6 x 3 5 x 3 4.2 x 3.1 4 x 4 4.5 x 4.5 x 4.5
.30 4.2 5.5 x 3.5 6 x 3.5 3.75 x 3.75
.33 4.4 5 x 3 5 x 5 x 5
.38 4.6 7 x 3.5 5 x 4 4.5 x 4.5
.40 4.8 5.5 x 5.5 x 5.5 4 x 4
.47 5.0
.50 5.2 6 x 4 8 x 4 6 x 4 5.2 x 3.9 5 x 5 4.5 x 4.5
.60 5.4
.65 5.6 5.5 x 5.5
.75 5.8 7 x 5 9 x 4.5 6 x 4 6 x 6 5 x 5
.80 6.0 6 x 4.5
.95 6.4
1.0 6.5 8 x 5 10 x 5 7 x 5 7 x 5 6.5 x 6.5 7 x 7 x 7 5.5 x 5.5
1.1 6.6
1.17 6.8
1.25 7.0 7.5 x 5.5 8 x 8 x 8 6 x 6
1.33 7.2
1.5 7.4 9 x 6 11 x 5.5 8 x 6 8 x 6 7 x 7 9 x 9 x 9 6.5 x 6.5
1.6 7.6
1.75 7.8
1.9 8.0
2.0 8.2 10 x 7 12 x 6 8.5 x 6.5 8.5 x 6.5 8 x 8 10 x 10 x 10 7.5 x 7.5
2.15 8.4
2.25 8.6
2.5 8.8 12 x 7 13 x 6.5 9 x 7 9 x 7 8.5 x 8.5 8 x 8
2.85 9.2
3.0 9.4 12 x 8 14 x 7 10 x 8 10 x 8 9 x 9 8.5 x 8.5
3.15 9.6
3.35 9.8
3.5 10.0 13 x 8 14 x 7.5 10 x 8.5 9.5 x 9.5
3.75 10.2
4.0 10.4 14 x 8 16 x 8 11 x 9 11 x 9 10 x 10 9 x 9
4.25 10.6
4.5 10.8 14.5 x 9 11 x 9.5 10.5 x 10.5
4.75 11.0
5.0 11.2 15 x 9 16 x 8.5 12 x 10 12 x 10 11 x 11 9.5 x 9.5


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