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milky to pink silicon dioxide mineral
Spinel is a hard vitreous magnesium aluminum oxide
creamy white to pale gray or beige
including the Chin-goo 808 Mine
but those varieties are transparent
Black Spinel 5mm Round - 15-16 Inch Special-Tucson-Buy-2025 milky to pink silicon dioxideSpinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not only has the dark color, but it is opaque as well, rendering its black especially deep and mysterious. Sometimes called the "Black Prince's Ruby" for its role in the English crown. It has been mistaken for ruby and sapphire at times, but can be distinguished by its structure and its lower relative hardness.
