Realgar and Andesine Physical Properties

Realgar

Andesine

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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

3.562.65-2.69

1 7.18

1.5 Fracture

(e.g. graphite).

Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

{010} Good

Perfect on {001}, good on {010}

1.7 Mohs Hardness

Not Available6-6.5

2 10

1.8 Chemical Composition

AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

(Na,Ca)Al_1-2Si_3-2O₈

Realgar and Andesine Chemical Formula

While comparing Realgar and Andesine 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 Andesine chemical formula.

Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈

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Realgar and Andesine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Realgar and Andesine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Realgar and Andesine Optical Properties during the identification of gemstone. Specific gravity of Realgar is 2.65-2.69 whereas that of Andesine is 2.65-2.69.