Ruby and Dumortierite Physical Properties

Ruby

Dumortierite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.053.26-3.41

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

No true cleavage

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

1.7 Mohs Hardness

97-8.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

AlAl₆O₃BSi₃O₁₈

Ruby and Dumortierite Chemical Formula

While comparing Ruby and Dumortierite 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 Ruby and Dumortierite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Ruby and Dumortierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.