Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.08-3.123.95-4.10
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Uneven
Cleavage
{010} Perfect
{110} Perfect, {110} Perfect, {110} Perfect
Mohs Hardness
7.53.5-4
2
10
👆🏻
Chemical Composition
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references