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Common Opal
Common Opal

Rutile
Rutile



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Common Opal
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Rutile

Common Opal and Rutile Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.98-2.50
Conchoidal
None
5.5-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
 
-
Insoluble in acids
-
4.20-4.30
Uneven, Conchoidal
{110} good, 100 moderate, parting on {092} and {011}
6-6.5
TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Common Opal and Rutile Chemical Formula

While comparing Common Opal and Rutile 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 Common Opal and Rutile chemical formula.

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Common Opal and Rutile Specific Gravity

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