Kyanite and Pargasite Physical Properties

Kyanite

Pargasite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.653.04-3.26

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Splintery, Brittle, Uneven

1.6 Cleavage

[100] perfect [010] imperfect with 79° angle between

{110} perfect

1.7 Mohs Hardness

4-75-6

2 10

1.8 Chemical Composition

Not Available

NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Kyanite and Pargasite Chemical Formula

While comparing Kyanite and Pargasite 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 Pargasite chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Kyanite Vs Swiss blue topaz

Kyanite and Pargasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.