Chrome-Chalcedony and Smoky Quartz Physical Properties

Chrome-Chalcedony

Smoky Quartz

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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

2.55-2.702.65

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

{0110} Indistinct

1.7 Mohs Hardness

6.5-77

2 10

1.8 Chemical Composition

SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)

SiO₂

Chrome-Chalcedony and Smoky Quartz Chemical Formula

While comparing Chrome-Chalcedony and Smoky Quartz 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 Chrome-Chalcedony and Smoky Quartz chemical formula.

Chemical formula of Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)
Chemical formula of Smoky Quartz- SiO₂

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Chrome-Chalcedony and Smoky Quartz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chrome-Chalcedony and Smoky Quartz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrome-Chalcedony and Smoky Quartz Optical Properties during the identification of gemstone. Specific gravity of Chrome-Chalcedony is 2.65 whereas that of Smoky Quartz is 2.65.