Cinnabar and Realgar Physical Properties
Tenacity
Slightly sectile
Not Available
Solubility
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Not Available
Durability
Not Available
Not Available
Fracture
Uneven, Uneven, Gemstones (2009), Brittle
(e.g. graphite).
Cleavage
Prismatic {10 1 0}, perfect
{010} Good
Mohs Hardness
2-2.5
Not Available
Chemical Composition
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Cinnabar and Realgar Chemical Formula
While comparing Cinnabar 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 Cinnabar and Realgar chemical formula.
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Cinnabar and Realgar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cinnabar and Realgar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Realgar Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 3.56 whereas that of Realgar is 3.56.