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Forsterite
Forsterite

Opal
Opal



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Forsterite
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Opal

Forsterite and Opal Physical Properties

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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)
 
BrittleWalter Schumann
hot salt water
-
1.98-2.25
Conchoidal
None
5-6.5
SiO2 · nH2O

Forsterite and Opal Chemical Formula

While comparing Forsterite and Opal 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 Opal chemical formula.

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Forsterite and Opal Specific Gravity

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