Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
4.3922.55-2.63
1
7.18
👆🏻
Fracture
Conchoidal
Uneven
Cleavage
{010} moderate, {100} imperfect
{001} Perfect, {010} Good
Mohs Hardness
6.5-76-6.5
2
10
👆🏻
Chemical Composition
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
KAlSi 3O 8Arthur Thomas , Gemstones (2009)