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Fire Opal
Fire Opal

Willemite
Willemite



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Fire Opal
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Willemite

Fire Opal and Willemite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.97-2.22
Conchoidal
None
6-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
 
-
-
-
3.89-4.18
Conchoidal, Uneven
{0001}, {11 2 0} imperfect
5.5
Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Fire Opal and Willemite Chemical Formula

While comparing Fire Opal and Willemite 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 Fire Opal and Willemite chemical formula.

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Fire Opal and Willemite Specific Gravity

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