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Dioptase
Dioptase

Calcite
Calcite



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Dioptase
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Calcite

Dioptase and Calcite Physical Properties

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Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
Soluble

Durability

-
-

Specific Gravity

3.25-3.352.67-2.73
1 7.18
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Fracture

Conchoidal, ConchoidalWalter Schumann
Conchoidal

Cleavage

Perfect in three directions
Perfect on [10 1 1] three directions with angle of 74° 55

Mohs Hardness

53
2 10
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Chemical Composition

CuSiO 2(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
CaCO 3Ulrich Henn and Claudio C.

Dioptase and Calcite Chemical Formula

While comparing Dioptase and Calcite 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 Calcite chemical formula.

  • Chemical formula of Dioptase- CuSiO 2(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

Dioptase and Calcite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dioptase and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dioptase and Calcite Optical Properties during the identification of gemstone. Specific gravity of Dioptase is 2.67-2.73 whereas that of Calcite is 2.67-2.73.