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Forsterite
Forsterite

Cordierite
Cordierite



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Forsterite
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Cordierite

Forsterite and Cordierite 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)
 
Brittle
-
-
2.57-2.66
Subconchoidal, Conchoidal
Fair on {100}, poor on {001} and {010}
7-7.5
Mg2Al4Si5O18

Forsterite and Cordierite Chemical Formula

While comparing Forsterite and Cordierite 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 Cordierite chemical formula.

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Forsterite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Forsterite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Forsterite Vs Cordierite during the identification of gemstone. Specific gravity of Forsterite is whereas that of Cordierite is .