Starlite and Onyx Physical Properties

Starlite

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

3.91-4.732.55-2.70

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

6.5-7.56.5-7

2 10

1.8 Chemical Composition

ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

SiO₂

Starlite and Onyx Chemical Formula

While comparing Starlite 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 Starlite and Onyx chemical formula.

Chemical formula of Starlite- ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Onyx- SiO₂

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Starlite and Onyx Specific Gravity

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