Sardonyx and Kyanite Physical Properties

Sardonyx

Kyanite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.55-2.703.53-3.65

1 7.18

1.5 Fracture

Not Available

Splintery, Brittle, Metallic

1.6 Cleavage

Not Available

[100] perfect [010] imperfect with 79° angle between

1.7 Mohs Hardness

6.5-74-7

2 10

1.8 Chemical Composition

SiO 2Ulrich Henn and Claudio C.

Not Available

Sardonyx and Kyanite Chemical Formula

While comparing Sardonyx and Kyanite 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 Kyanite chemical formula.

Chemical formula of Sardonyx- SiO 2Ulrich Henn and Claudio C.

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Sardonyx and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sardonyx and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sardonyx and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Sardonyx is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.