1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Conchoidal, Uneven, Brittle
Uneven, UnevenArthur Thomas, Gemstones (2009)
1.6 Cleavage
Imperfect on {001}, indistinct on {011}
perfect along [010] and [100]
1.7 Mohs Hardness
1.8 Chemical Composition
Not Available
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references