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Opal
Opal

Wavellite
Wavellite



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Opal
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Opal and Wavellite Physical Properties

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Physical Properties

Tenacity

BrittleWalter Schumann
-

Solubility

hot salt water
insoluble

Durability

-
-

Specific Gravity

1.98-2.252.36
1 7.18
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Fracture

Conchoidal
Uneven, Subconchoidal, Fibrous

Cleavage

None
[110] perfect, [101] good, [010] distinct

Mohs Hardness

5-6.53.5-4
2 10
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Chemical Composition

SiO2 · nH2O
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Opal and Wavellite Chemical Formula

While comparing Opal and Wavellite 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 Wavellite chemical formula.

  • Chemical formula of Opal- SiO2 · nH2O
  • Chemical formula of Wavellite- Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Opal and Wavellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Opal and Wavellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Wavellite Optical Properties during the identification of gemstone. Specific gravity of Opal is 2.36 whereas that of Wavellite is 2.36.