Sugilite and Austinite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Easily soluble in cold dilute HCl
Durability
Not Available
Not Available
Specific Gravity
2.69-2.79
4.12
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Brittle, Uneven, Brittle, Uneven
Cleavage
Poor on {0001}
Good in two directions parallel to the prism faces {110}
Mohs Hardness
5.5-6.5
4-4.5
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaZn(AsO4)(OH)
Sugilite and Austinite Chemical Formula
While comparing Sugilite and Austinite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Sugilite and Austinite chemical formula.
- Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Austinite- CaZn(AsO4)(OH)
Sugilite and Austinite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sugilite and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sugilite and Austinite Optical Properties during the identification of gemstone. Specific gravity of Sugilite is 4.12 whereas that of Austinite is 4.12.