AfricaGemsAnswer
Jul 16, 2025 - 09:48 AM
Opals, natural or lab cannot take any heat at all
Hello, what is the max temp this synthetic opal could be fired at for fire in place jewellery. Gilson Created Black Opal Round Cut in Grade GEM Opal
Metal Clay / Kiln use
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Open Jul 15, 2025 - 08:59 PM
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Gilson Created Black Opal Round Cut in Grade GEM
This Beautiful Gilson Created Black Opal Gemstone Features Materials Not Usually Found in Opal. The Gem Has a Black Background Wiht Vibrant Splashes of Play of Color in Most Hues. NOTE:Be sure to select the RIGHT gemstone/diamond by millimeter size only. Selecting your gemstone/diamond by carat weig...
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