1 Physical Properties
1.1 Tenacity
1.2 Solubility
slightly water soluble and in hot hydrochloric acid
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Brittle, Metallic
1.6 Cleavage
Octahedral, perfect on {111}, parting on {011}
Imperfect in one direction
1.7 Mohs Hardness
1.8 Chemical Composition
CaF2
CaCuAlSi 2O 6(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)