Sardonyx and Star Sapphire Physical Properties

Sardonyx

Star Sapphire

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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

2.55-2.703.90-4.05

1 7.18

1.5 Fracture

Not Available

1.6 Cleavage

Not Available

1.7 Mohs Hardness

6.5-7Not Available

2 10

1.8 Chemical Composition

SiO 2Ulrich Henn and Claudio C.

Al 2O 3Ulrich Henn and Claudio C.

Sardonyx and Star Sapphire Chemical Formula

While comparing Sardonyx and Star Sapphire 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 Sardonyx and Star Sapphire chemical formula.

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

Compare Blue Gemstones

Sardonyx Vs Sodalite

Sardonyx Vs Spinel

Sardonyx Vs Star Ruby

Sardonyx and Star Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sardonyx and Star Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sardonyx and Star Sapphire Optical Properties during the identification of gemstone. Specific gravity of Sardonyx is 3.90-4.05 whereas that of Star Sapphire is 3.90-4.05.