Smoky Quartz and Chalcedony Physical Properties

Smoky Quartz

Chalcedony

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.65

2.55-2.70

1.5 Fracture

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

Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann

1.6 Cleavage

{0110} Indistinct

Absent

1.7 Mohs Hardness

6.5-7

1.8 Chemical Composition

SiO₂

Smoky Quartz and Chalcedony Chemical Formula

While comparing Smoky Quartz and Chalcedony 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 Chalcedony chemical formula.

Chemical formula of Smoky Quartz- SiO₂
Chemical formula of Chalcedony- SiO₂

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Smoky Quartz and Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Smoky Quartz and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Smoky Quartz and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Smoky Quartz is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.