Cavansite and Onyx Physical Properties

Cavansite

Onyx

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.25-2.332.55-2.70

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Not Available

1.6 Cleavage

Good on {010}

Indiscernible

1.7 Mohs Hardness

3-46.5-7

2 10

1.8 Chemical Composition

Ca(VO)Si4O10•4(H2O)

SiO₂

Cavansite and Onyx Chemical Formula

While comparing Cavansite and Onyx 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 Cavansite and Onyx chemical formula.

Chemical formula of Cavansite- Ca(VO)Si4O10•4(H2O)
Chemical formula of Onyx- SiO₂

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Cavansite and Onyx Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cavansite and Onyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cavansite and Onyx Optical Properties during the identification of gemstone. Specific gravity of Cavansite is 2.55-2.70 whereas that of Onyx is 2.55-2.70.