Dumortierite and Sardonyx Physical Properties

Dumortierite

Sardonyx

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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

3.26-3.412.55-2.70

1 7.18

1.5 Fracture

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

Not Available

1.6 Cleavage

Distinct on {100}, poor on {110}; parting on {001}

Not Available

1.7 Mohs Hardness

7-8.56.5-7

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

SiO 2Ulrich Henn and Claudio C.

Dumortierite and Sardonyx Chemical Formula

While comparing Dumortierite 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 Dumortierite and Sardonyx chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈
Chemical formula of Sardonyx- SiO 2Ulrich Henn and Claudio C.

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Dumortierite and Sardonyx Specific Gravity

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