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Precious Opal
Precious Opal

Faustite
Faustite



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Precious Opal
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Faustite

Precious Opal and Faustite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.98-2.25
Conchoidal
None
5-6.5
SiO 2 · nH 2OGemdat.org , Management Team (2012)
 
-
-
-
2.9
Conchoidal
{???} Indistinct
4.5
(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

Precious Opal and Faustite Chemical Formula

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

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Precious Opal and Faustite Specific Gravity

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