Description
Spinel
Natural spinel is a gemstone that has become a great favorite with gem dealers and gem collectors; one might even say that spinel is for gemstone connoisseurs only.
It is a hard glassy mineral occurring as octahedral crystals of variable color and consisting chiefly of magnesium and aluminum oxides. Some spinels are among the most famous gemstones in the world: among them are the Black Prince’s Ruby and the “Timur ruby” in the British Crown Jewels, and the “Côte de Bretagne”, formerly from the French Crown jewels.