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Holly Gage
Jul 11, 2022
9 min read
New Cultured Opals can be Fired at 1650ºF in Metal Clay for 2 hours, but only if you do this...
How to fire new heat-resistant Cultured Opals in Fine Silver AND Enriched 950 Sterling and 960 Sterling Metal Clays at 1650 ºF for 2 hours
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