Sapphire and Sardonyx Physical Properties

Sapphire

Sardonyx

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.032.55-2.70

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Not Available

1.6 Cleavage

None, but may exhibit parting

Not Available

1.7 Mohs Hardness

96.5-7

2 10

1.8 Chemical Composition

Al ₂ O ₃

SiO 2Ulrich Henn and Claudio C.

Sapphire and Sardonyx Chemical Formula

While comparing Sapphire and Sardonyx 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 Sapphire and Sardonyx chemical formula.

Chemical formula of Sapphire- Al ₂ O ₃
Chemical formula of Sardonyx- SiO 2Ulrich Henn and Claudio C.

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Sapphire and Sardonyx Specific Gravity

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