Bertrandite and Sapphire Physical Properties

Bertrandite

Sapphire

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.59-2.603.95-4.03

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

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

None, but may exhibit parting

1.7 Mohs Hardness

6-79

2 10

1.8 Chemical Composition

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

Al ₂ O ₃

Bertrandite and Sapphire Chemical Formula

While comparing Bertrandite and Sapphire 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 Bertrandite and Sapphire chemical formula.

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

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Bertrandite and Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bertrandite and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.