Realgar and Spessartine Physical Properties

Realgar

Spessartine

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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

3.564.12-4.18

1 7.18

1.5 Fracture

(e.g. graphite).

ConchoidalArthur Thomas, Conchoidal, Brittle

1.6 Cleavage

{010} Good

{???} Distinct

1.7 Mohs Hardness

Not Available7-7.5

2 10

1.8 Chemical Composition

AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

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

Realgar and Spessartine Chemical Formula

While comparing Realgar and Spessartine 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 Spessartine chemical formula.

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

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Realgar and Spessartine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Realgar and Spessartine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Realgar and Spessartine Optical Properties during the identification of gemstone. Specific gravity of Realgar is 4.12-4.18 whereas that of Spessartine is 4.12-4.18.