1 Physical Properties
1.1 Tenacity
1.2 Solubility
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Uneven
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
1.6 Cleavage
Perfect basal
Perfect on {001}, poor on {201} with 38.5° angle between the two
1.7 Mohs Hardness
1.8 Chemical Composition
K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references