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  : Country of Gem Origin
Frequently Asked Questions (FAQ) / Country of Origin

Can you certify country of origin for your gemstones?

We currently offer identification reports from independent gemological labs that do not certify country of origin. However, there is growing interest in certifying gemstone origin and a number of labs have done (or are doing) research to enable them to do that. Please be aware that the results are not always conclusive, and most labs offer their identification as a "considered opinion" only. For more information on this issue please see our article on country of origin.

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  • First Published: February-20-2006
  • Last Updated: November-10-2014
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart