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