Agate and Obsidian Physical Properties

Agate

Obsidian

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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

2.60-2.64

2.35-2.60

1.5 Fracture

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

Conchoidal, ConchoidalWalter Schumann, Conchoidal

1.6 Cleavage

Indiscernible

Not Available

1.7 Mohs Hardness

6.5-7

5-5.5

1.8 Chemical Composition

SiO₂

Not Available

Agate and Obsidian Chemical Formula

While comparing Agate 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 Agate and Obsidian chemical formula.

Chemical formula of Agate- SiO₂

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Agate and Obsidian Specific Gravity

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