Gemstone Discussions

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[1] How to measure Specific Gravity

[2] Post for Commercial/Custom Cutters

[3] Advice on Lamberts and other overseas cutters

[4] brain fade

[5] Opal glue.

[6] Manganoan siderite Woy Woy

[7] Opal Identification help

[8] International Faceting Challenge.

[9] opal enthusiasts?

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