Black Spinel 15-20mm Double Drill Puff Hexagon - 8 Inch R1757 It occurs in bright turquoise

It occurs in bright turquoise blues and darker blues as well as rust reds

The crystal naturally forms with 18 facets

AKA- Amazon Stone

Golden Blood Quartz is a clear to milky to white silicon dioxide mineral

or some degree of pink in between

Black Spinel 15-20mm Double Drill Puff Hexagon - 8 Inch R1757 It occurs in bright turquoiseSpinel 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.