Enstatite is one of the pyroxene family – a series of magnesium to iron rich silicates. Enstatite occur as short prisms, but most gem-quality material is faceted from rolled pebbles. Cuttable enstatite varies in color from grey to yellowish green or olive-green, to an iron-rich brownish green. An excellent emerald green variety, coloued by chromium, also occurs.
Enstatite is usually found with kimberlites in South Africa. Brownish green enstatite can be found in Burma, Norway, and California (USA). Some Sri Lankan and Indian enstatite is chatoyant. It also occurs in United States, Switzerland, Greenland, Scotland, Japan and the former USSR.