Kyanite and Obsidian Physical Properties

Kyanite

Obsidian

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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

3.53-3.652.35-2.60

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Conchoidal, ConchoidalWalter Schumann, Conchoidal

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

4-75-5.5

2 10

1.8 Chemical Composition

Not Available

Kyanite and Obsidian Chemical Formula

While comparing Kyanite and Obsidian 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 Obsidian chemical formula.

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Kyanite and Obsidian Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.