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Kyanite
Kyanite

Boulder Opal
Boulder Opal



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Kyanite
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Boulder Opal

Kyanite and Boulder Opal Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.53-3.65
Splintery
[100] perfect [010] imperfect with 79° angle between
4-7
Al2SiO5
 
-
-
-
1.98-2.25
Conchoidal
None
5-6.5
SiO 2 + H 2OUlrich Henn and Claudio C.

Kyanite and Boulder Opal Chemical Formula

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

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Kyanite and Boulder Opal Specific Gravity

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