Obsidian and Gibbsite Physical Properties

Obsidian

Gibbsite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.35-2.602.35

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Conchoidal

Fibrous, Difficult, Fibrous

1.6 Cleavage

Not Available

{001} Perfect

1.7 Mohs Hardness

5-5.52.5-3

2 10

1.8 Chemical Composition

Not Available

Al(OH)3

Obsidian and Gibbsite Chemical Formula

While comparing Obsidian and Gibbsite 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 Obsidian and Gibbsite chemical formula.

Chemical formula of Gibbsite- Al(OH)3

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Obsidian and Gibbsite Specific Gravity

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