Forsterite and Bertrandite Physical Properties

Forsterite

Bertrandite

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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

3.23-3.262.59-2.60

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

Perfect on {010} imperfect on {100}

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

1.7 Mohs Hardness

6.5-76-7

2 10

1.8 Chemical Composition

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Forsterite and Bertrandite Chemical Formula

While comparing Forsterite 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 Forsterite and Bertrandite chemical formula.

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

Compare Green Gemstones

Forsterite Vs Grossular

Forsterite Vs Grandidierite

Forsterite Vs Hackmanite

Forsterite and Bertrandite Specific Gravity

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