Gemstone Discussions

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[1] How to measure Specific Gravity

[2] Post for Commercial/Custom Cutters

[3] Opal Identification help

[4] International Faceting Challenge.

[5] opal enthusiasts?

[6] Black Opal Ring Or Boulder Opal Ring?

[7] Gemboree 2021 Hobart

[8] Can you name and roughly appraise these gems?

[9] Very Useful gold and gem Information

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