Aragonite and Chalcedony Physical Properties
Tenacity
Brittle
Not Available
Solubility
Dilute acid
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.93-2.96
2.55-2.70
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
Cleavage
Distinct on {010}, imperfect {110} and {011}
Absent
Mohs Hardness
3.5-4
6.5-7
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO2
Aragonite and Chalcedony Chemical Formula
While comparing Aragonite and Chalcedony 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 Aragonite and Chalcedony chemical formula.
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Chalcedony- SiO2
Aragonite and Chalcedony Specific Gravity
Another important criteria for qualitative analysis of gemstones is Aragonite and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Aragonite and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Aragonite is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.