Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.60-3.615.9-6.3
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal, Uneven
Cleavage
Imperfect/fair/absent
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
Mohs Hardness
8-8.54.5-5
2
10
👆🏻
Chemical Composition
Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references