Tenacity
-
Brittle
Solubility
-
Dilute acid
Durability
-
-
Specific Gravity
3.60-3.612.93-2.96
1
7.18
👆🏻
Fracture
Conchoidal
Subconchoidal, Conchoidal
Cleavage
Imperfect/fair/absent
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
8-8.53.5-4
2
10
👆🏻
Chemical Composition
Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references