Realgar and Almandine Physical Properties

Realgar

Almandine

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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

3.56

3.95-4.30

1.5 Fracture

(e.g. graphite).

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

{010} Good

none

1.7 Mohs Hardness

Not Available

7-7.5

1.8 Chemical Composition

AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Realgar and Almandine Chemical Formula

While comparing Realgar and Almandine 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 Almandine chemical formula.

Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Compare Red Gemstones

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Realgar Vs Sarcopside

Realgar and Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Realgar and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Realgar and Almandine Optical Properties during the identification of gemstone. Specific gravity of Realgar is 3.95-4.30 whereas that of Almandine is 3.95-4.30.