UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Uneven
Subconchoidal, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
{010} Perfect, {001} Distinct
Perfect on [001] and [011]
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
TiO 2Michael OâDonoghue , Gems, Sixth edition (2006) More from other references