Ruby and Bertrandite Physical Properties

Ruby

Bertrandite

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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

3.97-4.052.59-2.60

1 7.18

1.5 Fracture

Conchoidal

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

No true cleavage

{001} Perfect, {110} Distinct, {101} Distinct

1.7 Mohs Hardness

96-7

2 10

1.8 Chemical Composition

Al ₂ O ₃

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Ruby and Bertrandite Chemical Formula

While comparing Ruby and Bertrandite 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 Bertrandite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Ruby and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.