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Realgar
Realgar

Sillimanite
Sillimanite



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Realgar
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Sillimanite

Realgar and Sillimanite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Tough
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.563.20-3.26
Amber
1 7.18
1.5 Fracture
(e.g. graphite).
Splintery
1.6 Cleavage
{010} Good
{010} perfect
1.7 Mohs Hardness
Not Available6-7.5
Amber
2 10
1.8 Chemical Composition
AsSMichael O’Donoghue , Gems, Sixth Edition (2006)
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Realgar and Sillimanite Chemical Formula

While comparing Realgar and Sillimanite 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 Sillimanite chemical formula.

  • Chemical formula of Realgar- AsSMichael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Realgar and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Realgar and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Realgar and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Realgar is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.