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AJS Diamond weight charts

Typically diamond weights that are expressed by fractions or fractional carat total weight (Cttw.) figures can vary. This does not apply to center diamonds that are separately purchased. The charts below represent normal variances by manufacture. Honest Jewelers should explain this to you before you buy.

Chart A
*Diamond Carat Tolerance Range
1/10 0.07 - 0.11
1/8 0.12 - 0.16
1/5 0.17 - 0.22
1/4 0.23 0.28
1/3 0.29 - 0.34
3/8 0.35 - 0.39
2/5 0.40 - 0.45
1/2 0.46 - 0.53
5/8 0.54 - 0.62
2/3 0.63 - 0.72
3/4 0.73 - 0.81
7/8 0.82 - 0.92
1 0.93 - 1.04
1 1/8 1.05 - 1.17
1 1/4 1.18 - 1.30
Chart B
*Diamond Carat Minimum Carat
1/20 .04
1/10 .09
1/8 .11
1/6 .14
1/5 .18
1/4 .23
1/3 .29
3/8 .37
1/2 .45
5/8 .60
3/4 .66
7/8 .84
9/10 .90
1 .96
1 1/8 1.10
1 1/6 1.14
1 1/5 1.18
1 1/4 1.23
1 1/3 1.29
1 3/8 1.37
1 1/2 1.45
1 5/8 1.60
1 3/4 1.66
1 7/8 1.84
1 9/10 1.90
2 1.96
2 1/8 2.10
2 1/6 2.14
2 1/5 2.18
2 1/4 2.23
2 1/3 2.29
2 3/8 2.37
2 1/2 2.45
2 5/8 2.60
2 3/4 2.66
2 7/8 2.84
2 9/10 2.90
3 2.96
Chart C
*Diamond Carat Tolerance Range
All sizes + or - 4 to 5%
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