Black Spinel 8mm Faceted Rondelle Large Hole (2-2.5mm) 8-Inch Dark one of the first fluorescent

one of the first fluorescent minerals ever studied

also known as Amazon Stone

cacao de nance

Due to its color and clarity

Black Spinel 8mm Faceted Rondelle Large Hole (2-2.5mm) 8-Inch Dark one of the first fluorescentSpinel 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.