Multi Spinel 3mm Banded Faceted Round - 15 Inch 48hr_06242025 its physical properties vary: its

its physical properties vary: its specific gravity may lie between 2

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green and yellow with white and gray inclusions

from which its name was derived

Multi Spinel 3mm Banded Faceted Round - 15 Inch 48hr_06242025 its physical properties vary: itsSpinel 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.