Smoky Quartz and Calcite Physical Properties

Smoky Quartz

Calcite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.65

2.67-2.73

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

{0110} Indistinct

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

1.7 Mohs Hardness

1.8 Chemical Composition

SiO₂

CaCO 3Ulrich Henn and Claudio C.

Smoky Quartz and Calcite Chemical Formula

While comparing Smoky Quartz 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 Smoky Quartz and Calcite chemical formula.

Chemical formula of Smoky Quartz- SiO₂
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

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Smoky Quartz and Calcite Specific Gravity

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