Onyx and Cryolite Physical Properties

Onyx

Cryolite

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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

2.55-2.70

2.97

1.5 Fracture

Not Available

Uneven

1.6 Cleavage

Indiscernible

None observed

1.7 Mohs Hardness

6.5-7

2.5

1.8 Chemical Composition

SiO₂

Na 3AlF 6Ulrich Henn and Claudio C.

Onyx and Cryolite Chemical Formula

While comparing Onyx and Cryolite 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 Onyx and Cryolite chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Cryolite- Na 3AlF 6Ulrich Henn and Claudio C.

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Onyx and Cryolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Cryolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Cryolite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 2.97 whereas that of Cryolite is 2.97.