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Piemontite
Piemontite

Chalcedony
Chalcedony



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Piemontite
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Chalcedony

Piemontite and Chalcedony Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
Soluble

Durability

-
-

Specific Gravity

-99992.55-2.70
1 7.18
👆🏻

Fracture

Uneven, Splintery
Uneven, Splintery, Conchoidal

Cleavage

[001] good, [100] distinct
Absent

Mohs Hardness

6-6.56.5-7
2 10
👆🏻

Chemical Composition

Ca2Al3(SiO4)(Si2O7)O(OH)
SiO2

Piemontite and Chalcedony Chemical Formula

While comparing Piemontite 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 Piemontite and Chalcedony chemical formula.

  • Chemical formula of Piemontite- Ca2Al3(SiO4)(Si2O7)O(OH)
  • Chemical formula of Chalcedony- SiO2

Piemontite and Chalcedony Specific Gravity

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