Prase Opal and Calcite Physical Properties

Prase Opal

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

1.98-2.25

2.67-2.73

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

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

5-6.5

1.8 Chemical Composition

SiO 2 + H 2OUlrich Henn and Claudio C.

CaCO 3Ulrich Henn and Claudio C.

Prase Opal and Calcite Chemical Formula

While comparing Prase Opal 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 Prase Opal and Calcite chemical formula.

Chemical formula of Prase Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.

Compare Blue Gemstones

Prase Opal Vs Sanidine

Prase Opal Vs Sard

Prase Opal Vs Sapphire

Prase Opal and Calcite Specific Gravity

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