Carnelian and Gibbsite Physical Properties

Carnelian

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

2.58-2.64

2.35

1.5 Fracture

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

Fibrous, Difficult, Fibrous

1.6 Cleavage

Absent

{001} Perfect

1.7 Mohs Hardness

6.5-7

2.5-3

1.8 Chemical Composition

SiO₂

Al(OH)3

Carnelian and Gibbsite Chemical Formula

While comparing Carnelian 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 Carnelian and Gibbsite chemical formula.

Chemical formula of Carnelian- SiO₂
Chemical formula of Gibbsite- Al(OH)3

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Carnelian and Gibbsite Specific Gravity

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