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
Canada, Southern and central Africa, Sri Lanka
Yellow, Colorless, Brown, Blue, Brown, Colorless, Green, gray
Brown
Not Available
Pearl, Moonstone, Pearl, Moonstone
Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Uneven
Transparent, Translucent, Not Available, Transparent . Star Diopside is opaque .
Gemmological Tables (2004)