Grossular and Cinnabar Physical Properties
Tenacity
-
Slightly sectile
Solubility
-
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Specific Gravity
3.55-3.73
2
Fracture
Conchoidal, Uneven
Uneven
Cleavage
none
Prismatic {10 1 0}, perfect
Mohs Hardness
7-7.5
2-2.5
Chemical Composition
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Grossular and Cinnabar Chemical Formula
While comparing Grossular 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 Grossular and Cinnabar chemical formula.
- Chemical formula of Grossular- Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Grossular and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Grossular and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grossular and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Grossular is 2 whereas that of Cinnabar is 2.