Smoky Quartz and Gibbsite Physical Properties

Smoky Quartz

Gibbsite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.652.35

1 7.18

1.5 Fracture

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

Fibrous, Difficult, Fibrous

1.6 Cleavage

{0110} Indistinct

{001} Perfect

1.7 Mohs Hardness

72.5-3

2 10

1.8 Chemical Composition

SiO₂

Al(OH)3

Smoky Quartz and Gibbsite Chemical Formula

While comparing Smoky Quartz 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 Smoky Quartz and Gibbsite chemical formula.

Chemical formula of Smoky Quartz- SiO₂
Chemical formula of Gibbsite- Al(OH)3

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Smoky Quartz and Gibbsite Specific Gravity

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