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Due to its natural porosity
Like all obsidian
It is known as the “Stone of Opportunity
Strand Length: 16 Inches
Multi Spinel 4mm Table Cut Cube A Grade - 15-16 Inch R1241 Due to its natural porositySpinel 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.
