Realgar and Emerald Physical Properties

Realgar

Emerald

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

Hard

1.4 Specific Gravity

3.562.67-2.78

1 7.18

1.5 Fracture

(e.g. graphite).

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

{010} Good

Imperfect on the [0001]

1.7 Mohs Hardness

Not Available7.5-8

2 10

1.8 Chemical Composition

AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

Be₃Al₂SiO₆

Realgar and Emerald Chemical Formula

While comparing Realgar and Emerald 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 Emerald chemical formula.

Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Emerald- Be₃Al₂SiO₆

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Realgar Vs Rutile

Realgar and Emerald Specific Gravity

Another important criteria for qualitative analysis of gemstones is Realgar and Emerald Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Realgar and Emerald Optical Properties during the identification of gemstone. Specific gravity of Realgar is 2.67-2.78 whereas that of Emerald is 2.67-2.78.