Edenite and Kyanite Physical Properties

Edenite

Kyanite

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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

3.05-3.373.53-3.65

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal

Splintery, Brittle, Metallic

1.6 Cleavage

Good on (110)

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

1.7 Mohs Hardness

5-64-7

2 10

1.8 Chemical Composition

NaCa2Mg5Si7AlO22(OH)2

Not Available

Edenite and Kyanite Chemical Formula

While comparing Edenite 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 Edenite and Kyanite chemical formula.

Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2

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Edenite and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Edenite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Edenite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Edenite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.