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Forsterite
Forsterite

Bertrandite
Bertrandite



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Forsterite
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Bertrandite

Forsterite and Bertrandite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.23-3.26
Conchoidal
Perfect on {010} imperfect on {100}
6.5-7
Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
 
-
-
-
2.59-2.60
-
{001} Perfect, {110} Distinct, {101} Distinct
6-7
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.

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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 Vs Bertrandite during the identification of gemstone. Specific gravity of Forsterite is whereas that of Bertrandite is .