Erythrite and Smoky Quartz Physical Properties

Erythrite

Smoky Quartz

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1 Physical Properties

1.1 Tenacity

Sectile

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.062.65

1 7.18

1.5 Fracture

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

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

1.6 Cleavage

Perfect on {010}; poor on {100} and { 1 02}.

{0110} Indistinct

1.7 Mohs Hardness

Not Available7

2 10

1.8 Chemical Composition

Co3(AsO4)2•8(H2O)

SiO₂

Erythrite and Smoky Quartz Chemical Formula

While comparing Erythrite 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 Erythrite and Smoky Quartz chemical formula.

Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)
Chemical formula of Smoky Quartz- SiO₂

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Erythrite and Smoky Quartz Specific Gravity

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