Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
3NaAlSi 3O 8 · NaClAnthony et al , Handbook of mineralogy (2001)
SiCArthur Thomas , Gemstones (2009)