Black Spinel 6mm Round - 15-16 Inch birthstone_sapphire It’s believed that Kublai Khan

It’s believed that Kublai Khan once offered an entire city in trade for a sizable Ruby

” taking its name from the stone

Shattuckite is a rare copper silicate hydroxide mineral

It is found only in a four square mile area in a remote mountain range of Chihuahua

First described in 1881

Black Spinel 6mm Round - 15-16 Inch birthstone_sapphire It’s believed that Kublai KhanSpinel 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.