Violane and Onyx Physical Properties

Violane

Onyx

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.22-3.402.55-2.70

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

Not Available

Indiscernible

1.7 Mohs Hardness

5-66.5-7

2 10

1.8 Chemical Composition

(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)

SiO₂

Violane and Onyx Chemical Formula

While comparing Violane 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 Violane and Onyx chemical formula.

Chemical formula of Violane- (Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
Chemical formula of Onyx- SiO₂

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Violane and Onyx Specific Gravity

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