Chalcedony and Marcasite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.70
4.80-4.90
Fracture
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven
Cleavage
Absent
{010} Indistinct
Mohs Hardness
6.5-7
6-6.5
Chemical Composition
SiO2
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chalcedony and Marcasite Chemical Formula
While comparing Chalcedony and Marcasite 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 Chalcedony and Marcasite chemical formula.
- Chemical formula of Chalcedony- SiO2
- Chemical formula of Marcasite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chalcedony and Marcasite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chalcedony and Marcasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chalcedony and Marcasite Optical Properties during the identification of gemstone. Specific gravity of Chalcedony is 4.80-4.90 whereas that of Marcasite is 4.80-4.90.