Canada, Southern and central Africa, 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
Brown
Yellow, Colorless, Brown, Blue, Brown, Colorless, Green, gray
Pearl, Moonstone, Pearl, Moonstone
Not Available
Uneven
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 .