Sapphire and Bertrandite Physical Properties

Sapphire

Bertrandite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.032.59-2.60

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

None, but may exhibit parting

{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)

Sapphire and Bertrandite Chemical Formula

While comparing Sapphire 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 Sapphire and Bertrandite chemical formula.

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

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Sapphire and Bertrandite Specific Gravity

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