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Boulder Opal
Boulder Opal

Girasol
Girasol



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Boulder Opal
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Girasol

Boulder Opal and Girasol 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 + H 2OUlrich Henn and Claudio C.
 
-
-
-
1.98-2.50
Conchoidal
None
5.5-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

Boulder Opal and Girasol Chemical Formula

While comparing Boulder Opal and Girasol 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 Boulder Opal and Girasol chemical formula.

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Boulder Opal and Girasol Specific Gravity

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