Diaspore and Onyx Physical Properties

Diaspore

Onyx

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1 Physical Properties

1.1 Tenacity

Very brittle

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.30-3.402.55-2.70

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Not Available

1.6 Cleavage

{010} perfect, {110} distinct, {100} in traces

Indiscernible

1.7 Mohs Hardness

6.5-76.5-7

2 10

1.8 Chemical Composition

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

SiO₂

Diaspore and Onyx Chemical Formula

While comparing Diaspore 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 Diaspore and Onyx chemical formula.

Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Onyx- SiO₂

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Diaspore and Onyx Specific Gravity

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