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Biotite
Biotite

Precious Opal
Precious Opal



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Biotite
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Precious Opal

Biotite and Precious Opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
2.7-3.3
Uneven, Even
Perfect on the {001}
2.5-3.0
K(Mg,Fe++)3[AlSi3O10(OH,F)2
 
-
-
-
1.98-2.25
Conchoidal
None
5-6.5
SiO 2 · nH 2OGemdat.org , Management Team (2012)

Biotite and Precious Opal Chemical Formula

While comparing Biotite and Precious 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 Biotite and Precious Opal chemical formula.

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Biotite and Precious Opal Specific Gravity

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