Austinite and Sugilite Physical Properties

Austinite

Sugilite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Easily soluble in cold dilute HCl

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.122.69-2.79

1 7.18

1.5 Fracture

Brittle, Uneven, Brittle, Uneven

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Good in two directions parallel to the prism faces {110}

Poor on {0001}

1.7 Mohs Hardness

4-4.55.5-6.5

2 10

1.8 Chemical Composition

CaZn(AsO4)(OH)

KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Austinite and Sugilite Chemical Formula

While comparing Austinite and Sugilite 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 Austinite and Sugilite chemical formula.

Chemical formula of Austinite- CaZn(AsO4)(OH)
Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Austinite and Sugilite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Austinite and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Austinite and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Austinite is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.