Onyx and Jet Physical Properties

Onyx

Jet

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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

2.55-2.701.19-1.35

1 7.18

1.5 Fracture

Not Available

ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

Indiscernible

Not Available

1.7 Mohs Hardness

6.5-72.5-4

2 10

1.8 Chemical Composition

SiO₂

Not Available

Onyx and Jet Chemical Formula

While comparing Onyx and Jet 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 Jet chemical formula.

Chemical formula of Onyx- SiO₂

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Onyx and Jet Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Jet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Jet Optical Properties during the identification of gemstone. Specific gravity of Onyx is 1.19-1.35 whereas that of Jet is 1.19-1.35.