Realgar and Chalcedony Physical Properties

Realgar

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

3.562.55-2.70

1 7.18

1.5 Fracture

(e.g. graphite).

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

1.6 Cleavage

{010} Good

Absent

1.7 Mohs Hardness

Not Available6.5-7

2 10

1.8 Chemical Composition

AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

SiO₂

Realgar and Chalcedony Chemical Formula

While comparing Realgar 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 Realgar and Chalcedony chemical formula.

Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Chalcedony- SiO₂

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Realgar and Chalcedony Specific Gravity

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