White, Colorless, Blue, Red, Green, Yellow, Violet
Colorless, Yellow, Brownish, Red, Violet, Blue, gray
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Splintery, Conchoidal, Brittle
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
Not Available