Southern and central Africa, Sixth Edition (2006)
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
Blue, Green, Blue, Brown
Yellow, Colorless, Brown, Blue, Brown, Colorless, Green, gray
Sub-Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Opaque
Transparent, Translucent, Not Available, Transparent . Star Diopside is opaque .