Black Spinel Black Gems - Semi Precious Stones Supplier
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Main chemical composition: Refractive index of iron-magnesium-aluminum oxide:1.712-1.736Hardness: 8 MohsMelting point: 1800℃, high temperature resistant, can be wax setOriginal: ThailandSpinel is a hard vitreous magnesium aluminum oxide that has been used as a gemstone for centuries. It can be the high temperature for heating and wax casting in Jewelry.
This Gemstones item by TheCuriousGem has 168 favorites from shoppers. Ships from United Kingdom. Listed on Jan 15, 2024
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