White, Colorless, Blue, Red, Green, Yellow, Violet
Black, Colorless, Green, Violet, White, Yellow, White, Colorless, Blue, Red, Green, Yellow, pink, Brown, Colorless, Violet, gray, Yellow
Not Available
Taurus, Capricorn, Sagittarius, Capricorn, Sagittarius
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Conchoidal, Brittle, Gems
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
SiO2