Kyanite and Prasiolite Physical Properties

Kyanite

Prasiolite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.652.65

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

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

3,1

1.7 Mohs Hardness

4-77

2 10

1.8 Chemical Composition

Not Available

SiO 2Ulrich Henn and Claudio C.

Kyanite and Prasiolite Chemical Formula

While comparing Kyanite and Prasiolite 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 Prasiolite chemical formula.

Chemical formula of Prasiolite- SiO 2Ulrich Henn and Claudio C.

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Kyanite and Prasiolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Prasiolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Prasiolite Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 2.65 whereas that of Prasiolite is 2.65.