White, Colorless, Blue, Red, Green, Yellow, Violet
Red, Reddish, Brown, Black, Yellow
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Splintery
(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
Not Available