Topaz and Smoky Quartz Physical Properties

Topaz

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

3.49-3.57

2.65

1.5 Fracture

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

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

1.6 Cleavage

[001] Perfect

{0110} Indistinct

1.7 Mohs Hardness

1.8 Chemical Composition

Al₂SiO₄(F,OH)₂

SiO₂

Topaz and Smoky Quartz Chemical Formula

While comparing Topaz 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 Topaz and Smoky Quartz chemical formula.

Chemical formula of Topaz- Al₂SiO₄(F,OH)₂
Chemical formula of Smoky Quartz- SiO₂

Compare Gems for Sagittarius

Topaz Vs Quartz Smoky

Topaz Vs Petoskey Stone

Topaz Vs Pietersite

Topaz and Smoky Quartz Specific Gravity

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