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Dolomite
Dolomite

Chalcedony
Chalcedony



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Dolomite and Chalcedony Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Poorly soluble in dilute HCl
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.80-2.95
2.55-2.70
1.5 Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
1.6 Cleavage
Perfect on {10 1 1}, rhombohedral cleavage
Absent
1.7 Mohs Hardness
3.5-4
6.5-7
1.8 Chemical Composition
CaMg(CO 3) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
SiO2

Dolomite and Chalcedony Chemical Formula

While comparing Dolomite 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 Dolomite and Chalcedony chemical formula.

  • Chemical formula of Dolomite- CaMg(CO 3) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Chalcedony- SiO2

Dolomite and Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dolomite and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dolomite and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Dolomite is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.