Carnelian and Obsidian Physical Properties

Carnelian

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

2.58-2.64

2.35-2.60

1.5 Fracture

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

Conchoidal, ConchoidalWalter Schumann, Conchoidal

1.6 Cleavage

Absent

Not Available

1.7 Mohs Hardness

6.5-7

5-5.5

1.8 Chemical Composition

SiO₂

Not Available

Carnelian and Obsidian Chemical Formula

While comparing Carnelian 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 Carnelian and Obsidian chemical formula.

Chemical formula of Carnelian- SiO₂

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Carnelian Vs Quartz

Carnelian Vs Kunzite

Carnelian Vs Prasiolite

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Carnelian and Obsidian Specific Gravity

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