Rock Crystal and Calcite Physical Properties

Rock Crystal

Calcite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.652.67-2.73

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

SiO 2Walter Schumann , Gemstones of the world (2001)

CaCO 3Ulrich Henn and Claudio C.

Rock Crystal and Calcite Chemical Formula

While comparing Rock Crystal 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 Rock Crystal and Calcite chemical formula.

Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

Compare Blue Gemstones

Rock Crystal Vs Scorzalite

Rock Crystal Vs Sardonyx

Rock Crystal Vs Serendibite

Rock Crystal and Calcite Specific Gravity

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