Dallasite and Onyx Physical Properties

Dallasite

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

2.58-2.912.55-2.70

1 7.18

1.5 Fracture

Not Available

1.6 Cleavage

Not Available

Indiscernible

1.7 Mohs Hardness

6.5-76.5-7

2 10

1.8 Chemical Composition

Not Available

SiO₂

Dallasite and Onyx Chemical Formula

While comparing Dallasite 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 Dallasite and Onyx chemical formula.

Chemical formula of Onyx- SiO₂

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Dallasite and Onyx Specific Gravity

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