Smoke Treatment of Welo Opals by Bear and Cara Williams

Stone Group Laboratories, LLC, provides non-destructive, advanced gemological testing services to the trade and offers global consulting services as well as custom research projects regarding colored gemstones.

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Barbra Voltaire, FGG
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Smoke Treatment of Welo Opals by Bear and Cara Williams

Post by Barbra Voltaire, FGG »

[pdfview]http://stonegrouplabs.com/wp/wp-content/uploads/2013/01/SmokeTreatmentinWolloOpal.pdf[/pdfview]
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Cara Williams
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Re: Smoke Treatment of Welo Opals by Bear and Cara Williams

Post by Cara Williams »

Thanks for posting this, Barbra. Bear had fun breaking in the new grill when trying to duplicate the treatment. It was a deceptively simple treatment, but very difficult to solve with very few clues to go by.
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