Almandine and Realgar Physical Properties

Almandine

Realgar

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.30

3.56

1.5 Fracture

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

(e.g. graphite).

1.6 Cleavage

none

{010} Good

1.7 Mohs Hardness

7-7.5

Not Available

1.8 Chemical Composition

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

AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

Almandine and Realgar Chemical Formula

While comparing Almandine and Realgar 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 Almandine and Realgar chemical formula.

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

Compare Red Gemstones

Almandine Vs Aragonite

Almandine Vs Baryte Barite

Almandine Vs Black Opal

Almandine and Realgar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Almandine and Realgar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Realgar Optical Properties during the identification of gemstone. Specific gravity of Almandine is 3.56 whereas that of Realgar is 3.56.