Carnelian and Cinnabar Physical Properties
Tenacity
Not Available
Slightly sectile
Solubility
Not Available
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Durability
Not Available
Not Available
Specific Gravity
2.58-2.64
2
Fracture
Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Uneven, Uneven, Gemstones (2009), Brittle
Cleavage
Absent
Prismatic {10 1 0}, perfect
Mohs Hardness
6.5-7
2-2.5
Chemical Composition
SiO2
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Carnelian and Cinnabar Chemical Formula
While comparing Carnelian and Cinnabar 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 Carnelian and Cinnabar chemical formula.
- Chemical formula of Carnelian- SiO2
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Carnelian and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Carnelian and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 2 whereas that of Cinnabar is 2.