Black Spinel 8mm Faceted Rondelle Large Hole (2-2.5mm) 8-Inch Turquoise Alternatives often occurring with inclusions of

often occurring with inclusions of white

Azurite often occurs with green Malachite

Unlike other forms of opal

Moroccan Agate is a variety of Chalcedony

creamy white to pale gray or beige

Black Spinel 8mm Faceted Rondelle Large Hole (2-2.5mm) 8-Inch Turquoise Alternatives often occurring with inclusions ofSpinel 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.