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Spinel - Sold

Spinel is a magnesium aluminum oxide known since ancient times. The modern name may come from the Latin spinella, for little thorn, an allusion to its spine-shaped octahedral form. Pure spinel is colorless, but a wide range of impurities are known to impart a complete color gamut for the species. Gem red spinel from Burma owes its color to chromium, just as in the ruby variety of corundum.

This is a flattened octahedral gem crystal of spinel. Excellent transparency. Its thinness likely saved it from the cutting wheel. 1.39 cts.