Realgar and Malachite Physical Properties

Realgar

Malachite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.563.25-4.10

1 7.18

1.5 Fracture

(e.g. graphite).

Conchoidal, Conchoidal, Gemstones (2009), Uneven

1.6 Cleavage

{010} Good

Perfect on { 2 01} fair on {010}

1.7 Mohs Hardness

Not Available3.5-4

2 10

1.8 Chemical Composition

AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

Cu₂CO₃(OH)₂

Realgar and Malachite Chemical Formula

While comparing Realgar and Malachite 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 Malachite chemical formula.

Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Malachite- Cu₂CO₃(OH)₂

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Realgar and Malachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Realgar and Malachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Realgar and Malachite Optical Properties during the identification of gemstone. Specific gravity of Realgar is 3.25-4.10 whereas that of Malachite is 3.25-4.10.