Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.59-2.602.60-2.64
1
7.18
👆🏻
Fracture
-
Uneven, Splintery, Conchoidal
Cleavage
{001} Perfect, {110} Distinct, {101} Distinct
Absent
Mohs Hardness
6-76.5-7
2
10
👆🏻
Chemical Composition
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
SiO 2Arthur Thomas , Gemstones (2009)