Black Spinel 6mm Round - 15-16 Inch birthstone_sapphire Smoky Quartz

Smoky Quartz

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

Shattuckite is a rare copper silicate hydroxide mineral

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

believed to have a special significance to those in romantic relationships

Black Spinel 6mm Round - 15-16 Inch birthstone_sapphire Smoky QuartzSpinel 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.