Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.43-3.442.98-3.10
1
7.18
👆🏻
Fracture
-
Uneven, Conchoidal
Cleavage
None Observed
{100} Perfect, {110} Good, {011} Distinct
Mohs Hardness
6.5-75.5-6
2
10
👆🏻
Chemical Composition
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references