Reddish, Brown, Red, pink, pink
White, White, Greenish, White, Greenish, White, Greenish
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Not Available
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
NaCa2Si4O10F