Onyx and Agate Physical Properties

Onyx

Agate

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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

2.55-2.702.60-2.64

1 7.18

1.5 Fracture

Not Available

Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

Indiscernible

1.7 Mohs Hardness

6.5-76.5-7

2 10

1.8 Chemical Composition

SiO₂

Onyx and Agate Chemical Formula

While comparing Onyx and Agate 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 Agate chemical formula.

Chemical formula of Onyx- SiO₂
Chemical formula of Agate- SiO₂

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Onyx and Agate Specific Gravity

Another important criteria for qualitative analysis of gemstones is Onyx and Agate Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Onyx and Agate Optical Properties during the identification of gemstone. Specific gravity of Onyx is 2.60-2.64 whereas that of Agate is 2.60-2.64.