Carnelian and Cordierite Physical Properties

Carnelian

Cordierite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.58-2.64

2.57-2.66

1.5 Fracture

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

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

Absent

Fair on {100}, poor on {001} and {010}

1.7 Mohs Hardness

6.5-7

7-7.5

1.8 Chemical Composition

SiO₂

Mg2Al4Si5O18

Carnelian and Cordierite Chemical Formula

While comparing Carnelian and Cordierite 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 Cordierite chemical formula.

Chemical formula of Carnelian- SiO₂
Chemical formula of Cordierite- Mg2Al4Si5O18

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Carnelian Vs Quartz

Carnelian Vs Kunzite

Carnelian Vs Prasiolite

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Carnelian and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Carnelian and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.