AfricaGemsAnswer
Apr 02, 2024 - 02:36 PM
the black onyx gems in that shape and size are 2-3 mm thick.
How thick is the black onyx gemstone? Black Onyx Flat Square Cut in Grade AAA Black Onyx Cabochon
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Open Apr 02, 2024 - 01:25 PM
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Black Onyx Flat Square Cut in Grade AAA
This Natural Black Onyx Gemstone in the AAA Grade, Displays a Velvety Black Color with Even Color .
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