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Gaspeite
Gaspeite
☒

Common Opal
Common Opal
☒



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Common Opal
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
HCl soluble
-
3.71
Uneven
{10 1 1} Good
4.5-5
(Ni,Mg,Fe++)CO3
 
-
-
-
1.98-2.50
Conchoidal
None
5.5-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Compare Green Gemstones

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Richterite
Richterite
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Common Opal Vs Langbeinite
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Nepouite
Common Opal Vs Nepouite

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