Tanzania, Sri Lanka, China
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
Colorless
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) More from other references
Transparent, Translucent, Not Available, Transparent . Star Diopside is opaque .