Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.65-4.553.80-4.15
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
None, but may exhibit slight parting
perfect along [010] and [100]
Mohs Hardness
7.5-83.5-4
2
10
👆🏻
Chemical Composition
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references