Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.60-2.642.59-2.60
1
7.18
👆🏻
Fracture
Uneven, Splintery, Conchoidal
-
Cleavage
Absent
{001} Perfect, {110} Distinct, {101} Distinct
Mohs Hardness
6.5-76-7
2
10
👆🏻
Chemical Composition
SiO 2Arthur Thomas , Gemstones (2009)
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)