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Calcite and Rock Crystal Physical Properties


Rock Crystal and Calcite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Soluble   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.67-2.73   
2.65   

Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal   
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)   

Cleavage
Perfect on [10 1 1] three directions with angle of 74° 55   
Not Available   

Mohs Hardness
3   
7   

Chemical Composition
CaCO 3Ulrich Henn and Claudio C.   
SiO 2Walter Schumann , Gemstones of the world (2001)   

Optical Properties >>
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Calcite and Rock Crystal Chemical Formula

While comparing Calcite and Rock Crystal 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 Calcite and Rock Crystal chemical formula.

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Calcite and Rock Crystal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Calcite and Rock Crystal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Rock Crystal Optical Properties during the identification of gemstone. Specific gravity of Calcite is 2.65 whereas that of Rock Crystal is 2.65.

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