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Common Opal
Common Opal

Boracite
Boracite



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Common Opal
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Boracite

Common Opal and Boracite 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)
 
Brittle
Soluble
-
2.95-2.96
Conchoidal
None
7-7.5
Mg 3B 7O 13ClMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Common Opal and Boracite Chemical Formula

While comparing Common Opal and Boracite 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 Boracite chemical formula.

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Common Opal and Boracite Specific Gravity

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