Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.97-3.142.58-2.64
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
-
Cleavage
{1011} Indistinct
None
Mohs Hardness
-99996.5-7
2
10
👆🏻
Chemical Composition
Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
SiO 2Walter Schumann , Gemstones of the world (2001)