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Kyanite
Kyanite

Oligoclase
Oligoclase



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Kyanite
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Oligoclase

Kyanite and Oligoclase 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
 
-
-
-
2.62-2.67
Uneven
From the Greek, oligos and kasein, little cleavage.
6-6.5
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Kyanite and Oligoclase Chemical Formula

While comparing Kyanite and Oligoclase 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 Oligoclase chemical formula.

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Kyanite and Oligoclase Specific Gravity

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