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Verdelite
Verdelite

Chalcedony
Chalcedony



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Verdelite
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Chalcedony

Verdelite and Chalcedony Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.90-3.40
2.55-2.70
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
1.6 Cleavage
Not Available
Absent
1.7 Mohs Hardness
7-7.5
6.5-7
1.8 Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
SiO2

Verdelite and Chalcedony Chemical Formula

While comparing Verdelite 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 Verdelite and Chalcedony chemical formula.

  • Chemical formula of Verdelite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
  • Chemical formula of Chalcedony- SiO2

Verdelite and Chalcedony Specific Gravity

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

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