UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Uneven
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Pb 5(AsO 4) 3ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references