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Chalcedony
Chalcedony

Adamite
Adamite



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Chalcedony and Adamite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Soluble
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.55-2.70
4.32-4.48
1.5 Fracture
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic
1.6 Cleavage
Absent
{101}, good; {010}, poor
1.7 Mohs Hardness
6.5-7
3.5
1.8 Chemical Composition
SiO2
Zn 2(AsO 4)(OH)Michael O’Donoghue , Gems, Sixth edition (2006)

Chalcedony and Adamite Chemical Formula

While comparing Chalcedony and Adamite 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 Adamite chemical formula.

  • Chemical formula of Chalcedony- SiO2
  • Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael O’Donoghue , Gems, Sixth edition (2006)

Chalcedony and Adamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chalcedony and Adamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chalcedony and Adamite Optical Properties during the identification of gemstone. Specific gravity of Chalcedony is 4.32-4.48 whereas that of Adamite is 4.32-4.48.