Black Spinel 6mm Round - 15-16 Inch Latest-MAR2022 meaning it becomes magnetically charged

meaning it becomes magnetically charged from heat or friction

First described in 1881

light gray or black

Brazilian Amazonite is an opaque blue-green to light green stone

Its colors include burnt red

Black Spinel 6mm Round - 15-16 Inch Latest-MAR2022 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.