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Grandidierite
Grandidierite
☒

Kyanite
Kyanite
☒



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Grandidierite
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Kyanite

Grandidierite and Kyanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.85-3.00
Uneven
Perfect
7.5
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
 
Brittle
-
-
3.53-3.65
Splintery
[100] perfect [010] imperfect with 79° angle between
4-7
Al2SiO5

Grandidierite and Kyanite Chemical Formula

While comparing Grandidierite and Kyanite 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 Grandidierite and Kyanite chemical formula.

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Grandidierite and Kyanite Specific Gravity

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