Bertrandite and Starlite Physical Properties

Bertrandite

Starlite

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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

2.59-2.603.91-4.73

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

6-76.5-7.5

2 10

1.8 Chemical Composition

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

ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Bertrandite and Starlite Chemical Formula

While comparing Bertrandite and Starlite 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 Starlite chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Starlite- ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Bertrandite and Starlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bertrandite and Starlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bertrandite and Starlite Optical Properties during the identification of gemstone. Specific gravity of Bertrandite is 3.91-4.73 whereas that of Starlite is 3.91-4.73.