Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.44-2.623.95-4.10
1
7.18
👆🏻
Fracture
Uneven
Uneven
Cleavage
Indiscernible
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
2.5-5.53.5-4
2
10
👆🏻
Chemical Composition
H 4Mg 3Si 2O 9Walter Schumann , Gemstones of the world (2001) More from other references
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references