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meaning it becomes magnetically charged from heat or friction
milky to pink silicon dioxide mineral
It is a variety of the mineral corundum
is a deep blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color
Dakota Stones Australian Opals are back
Black Spinel 4x8mm Faceted Rondelle - 15-16 Inch R0305 meaning it becomes magnetically chargedSpinel 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.
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