Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.62-3.803.95-4.10
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
None
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
7-7.53.5-4
2
10
👆🏻
Chemical Composition
Mg 3(Al,Cr) 2(SiO 4) 3Gemdat.org , Management Team (2012)
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references