Dumortierite and Ruby Physical Properties

Dumortierite

Ruby

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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

3.26-3.413.97-4.05

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

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

No true cleavage

1.7 Mohs Hardness

7-8.59

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

Al ₂ O ₃

Dumortierite and Ruby Chemical Formula

While comparing Dumortierite and Ruby 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 Ruby chemical formula.

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

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Dumortierite and Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Ruby Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.97-4.05 whereas that of Ruby is 3.97-4.05.