Brazil, Kenya, Madagascar, Mozambique, Sri Lanka
USA, Brazyl, Austria, Italy, Tanzania, Pakistan, Russia, Sri Lanka, Burma, Color: green, yellow-green, Not Available, Not Available, Not Available, Hardness: 5.5 6, Refractive index: 1.66 1.71, Density: 3.25 3.55, Chemical composition: CaMg(Si2O6), Crystal structure: monoclinic, Origins: USA, Brazyl, Austria, Italy, Tanzania, Pakistan, Russia, Sri Lanka
Red
Yellow, Colorless, Brown, Blue, Brown, Colorless, Green, gray
Conchoidal
Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Gemmological Tables (2004)
Transparent, Translucent, Not Available, Transparent . Star Diopside is opaque .