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Common Opal
Common Opal

Pectolite
Pectolite



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Common Opal
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Pectolite

Common Opal and Pectolite 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
-
-
2.74-2.90
Uneven, Splintery
Perfect on {100} and {001}
4.5-5
Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.

Common Opal and Pectolite Chemical Formula

While comparing Common Opal and Pectolite 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 Pectolite chemical formula.

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Common Opal and Pectolite Specific Gravity

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