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Opal
Opal

Andesine
Andesine



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Opal
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Andesine

Opal and Andesine Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
BrittleWalter Schumann
hot salt water
-
1.98-2.25
Conchoidal
None
5-6.5
SiO2 · nH2O
 
Brittle
-
-
2.65-2.69
Uneven, Conchoidal
Perfect on {001}, good on {010}
6-6.5
(Na,Ca)Al1-2Si3-2O8

Opal and Andesine Chemical Formula

While comparing Opal and Andesine 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 Opal and Andesine chemical formula.

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Opal and Andesine Specific Gravity

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