ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
White, Yellow, Pale blue, Brittle, Uneven
{100} perfect; {110} and {1 1 0} good; {010} poor
Perfect on {100} and {010}, imperfect on {101}
(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Not Available