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Dioptase
Dioptase

Austinite
Austinite



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Dioptase
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Austinite

Dioptase and Austinite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
Easily soluble in cold dilute HCl

Durability

-
-

Specific Gravity

3.25-3.354.12
1 7.18
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Fracture

Conchoidal, ConchoidalWalter Schumann
Uneven

Cleavage

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

Mohs Hardness

54-4.5
2 10
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Chemical Composition

CuSiO 2(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
CaZn(AsO4)(OH)

Dioptase and Austinite Chemical Formula

While comparing Dioptase 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 Dioptase and Austinite chemical formula.

  • Chemical formula of Dioptase- CuSiO 2(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Austinite- CaZn(AsO4)(OH)

Dioptase and Austinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dioptase and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dioptase and Austinite Optical Properties during the identification of gemstone. Specific gravity of Dioptase is 4.12 whereas that of Austinite is 4.12.