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Opal
Opal

Pezzottaite
Pezzottaite



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Opal
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Pezzottaite

Opal and Pezzottaite Physical Properties

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Physical Properties

Tenacity

BrittleWalter Schumann
-

Solubility

hot salt water
-

Durability

-
-

Specific Gravity

1.98-2.252.90-3.14
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal, Uneven

Cleavage

None
Imperfect; basal

Mohs Hardness

5-6.57.5-8
2 10
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Chemical Composition

SiO2 · nH2O
(Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.

Opal and Pezzottaite Chemical Formula

While comparing Opal and Pezzottaite 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 Pezzottaite chemical formula.

  • Chemical formula of Opal- SiO2 · nH2O
  • Chemical formula of Pezzottaite- (Be,Cs) 3Al 2Si 6O 18 · 0.5H 2OUlrich Henn and Claudio C.

Opal and Pezzottaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Opal and Pezzottaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Pezzottaite Optical Properties during the identification of gemstone. Specific gravity of Opal is 2.90-3.14 whereas that of Pezzottaite is 2.90-3.14.