USA, Brazyl, Austria, Italy, Tanzania, Pakistan, Russia, Sri Lanka, Burma, Color: green, yellow-green, 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
Brazil, Kenya, Madagascar, Mozambique, Sri Lanka
Yellow, Colorless, Brown, Blue, Green, gray
Red
Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
Conchoidal
Transparent, Translucent, Not Available, Transparent . Star Diopside is opaque .
Gemmological Tables (2004)