Black Spinel 10mm Natural Round - 15-16 Inch rqtz-spe-str rainbow effect of light refracting

rainbow effect of light refracting off of the air bubbles inside of the stone

who first discovered the stone in Southern California in 1868

It's defined by a bright green color

and protective stone which promotes strength and vitality

white and occasionally gray or brown

Black Spinel 10mm Natural Round - 15-16 Inch rqtz-spe-str rainbow effect of light refractingSpinel 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.