Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
1.65-1.992.64-2.69
1
7.18
👆🏻
Fracture
Uneven
-
Cleavage
{010} Perfect, {110} Perfect
None
Mohs Hardness
2-2.57
2
10
👆🏻
Chemical Composition
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)