Steatite and Chalcedony Physical Properties

Steatite

Chalcedony

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.20-2.802.55-2.70

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

Not Available

Absent

1.7 Mohs Hardness

Not Available6.5-7

2 10

1.8 Chemical Composition

Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)

SiO₂

Steatite and Chalcedony Chemical Formula

While comparing Steatite 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 Steatite and Chalcedony chemical formula.

Chemical formula of Steatite- Mg 3Si 4O 10(OH) 2Gemdat.org , Management Team (2012)
Chemical formula of Chalcedony- SiO₂

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Steatite and Chalcedony Specific Gravity

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