Enstatite is a known member of the Orthopyroxene Group that also includes Bronzite and Hypersthene. It is found as colorless, gray, green, yellow and crystals which can be brown. Enstatite is closely associated with Bronzite which has somewhat more iron content than Enstatite and is, as the title implies, a lovely bronze color and has luster that is sub-adamantine. An extremely dark green to black colored Enstatite pet’s eye can be available and a chrome chromian-Enstatite that is green rarely discovered.

Enstatite can be found in numerous locations worldwide but only a produce that is few quality crystals. Two of the best locations which are known Embilipituya, Sri Lanka and Mbeya, Tanzania. Enstatite is also commonly found in iron and stony meteorites.

Distribution: Prominent localities for well-studied product include: from · Zdár (Zdjarberg), Czech Republic. At Ødegården and Kjörrestad, Bamble, Norway. From The Lizard, Cornwall, England. At Dawros, County Connaught, Ireland. From Kupferberg, Bavaria, and the Bellerberg volcano, two north that is km of, Eifel district, Germany. At Kraubath, Styria, Austria. Fine crystals from Mbeya, Tanzania. At Liahobong, Lesotho. In the united states, at Webster, Jackson County, and on Corundum Hill, Macon County, North Carolina; at Wood’s chrome mine and Texas, Lancaster County, and elsewhere in Pennsylvania. Gem material from Embilipituya, Sri Lanka.

Category: Inosilicate
Chemical Formula: Mg2Si2O6
Magnesium Silicate
Molecular Weight: 200.78 gm
Composition: Magnesium 24.21 % Mg 40.15 % MgO
Silicon 27.98 % Si 59.85 % SiO2
Oxygen 47.81 % O
  100.00 % 100.00 % = TOTAL OXIDE


Crystallography: Orthorhombic – Dipyramidal
Crystal Habit: Crystals prismatic, to 40 cm; commonly lamellar, fibrous, or massive.
Twinning: Simple and lamellar twinning on {100}


Cleavage: Good on {210}, (210) ^ (210) ~88°; partings on {100} and {010}
Fracture: Irregular/Uneven
Tenacity: Brittle
Moh’s Hardness: 5.0 – 6.0
Density: 3.20 – 3.90 (g/cm3)
Luminescence: Not Fluorescent
Radioactivity: Not Radioactive


Color: White, grayish, yellowish, greenish, olive-green, brown; colorless in thin section
Transparency: Transparent to Opaque
Luster: Vitreous, pearly on cleavages
Refractive Index: 1.650 – 1.679  Biaxial ( + ) 
Birefringence: 0.009 – 0.011
Dispersion: Weak to moderate; r < v
Pleochroism: None