Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Uneven, Subconchoidal, Uneven, Subconchoidal, Conchoidal, Brittle
Ca 5(PO 4) 3FAnthony et al , Handbook of mineralogy (2001)
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references