Onyx and Cobaltite Physical Properties

Onyx

Cobaltite

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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

2.55-2.706.3

1 7.18

1.5 Fracture

Not Available

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

1.6 Cleavage

Indiscernible

{100} Good, {010} Good, {001} Good

1.7 Mohs Hardness

6.5-75.5

2 10

1.8 Chemical Composition

SiO₂

CoAsSAnthony et al , Handbook of mineralogy (2001)

Onyx and Cobaltite Chemical Formula

While comparing Onyx and Cobaltite 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 Cobaltite chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

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Onyx and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Onyx is 6.3 whereas that of Cobaltite is 6.3.