Black Spinel 8mm Faceted Rondelle Large Hole (2-2.5mm) 8-Inch Dark It was named and first

It was named and first described by the Greek philosopher and botanist Theosphrastus in 315 BCE

It has also been considered a sacred stone in India throughout its history

with every gradient of gray in between

Porcelain Agate is a natural agate that is dyed and heated to give it the unique blue color and pattern that resembles porcelain

one of the first fluorescent minerals ever studied

Black Spinel 8mm Faceted Rondelle Large Hole (2-2.5mm) 8-Inch Dark It was named and firstSpinel 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.