1 Physical Properties
1.1 Tenacity
1.2 Solubility
1.1 Durability
Not Available
Not Available
1.4 Specific Gravity
2.77-2.883.30-3.50
1
7.18
1.6 Fracture
Uneven
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
1.7 Cleavage
Perfect basal
Perfect on {110}, poor on {101}, {001} rare
1.8 Mohs Hardness
1.11 Chemical Composition
K(Al,Cr) 3Si 3O 10(OH) 2Gemdat.org , Management Team (2012)
Zn 4Si 2O 7(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references