Bertrandite and Moldavite Physical Properties

Bertrandite

Moldavite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.59-2.602.32-2.38

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

6-75.5

2 10

1.8 Chemical Composition

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

SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

Bertrandite and Moldavite Chemical Formula

While comparing Bertrandite and Moldavite 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 Moldavite chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Moldavite- SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)

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Bertrandite and Moldavite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bertrandite and Moldavite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Moldavite Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 2.32-2.38 whereas that of Moldavite is 2.32-2.38.