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Piemontite
Piemontite

Zoisite
Zoisite



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Piemontite
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Zoisite

Piemontite and Zoisite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

-99993.20-3.50
1 7.18
👆🏻

Fracture

Uneven, Splintery
Uneven, Conchoidal, Even

Cleavage

[001] good, [100] distinct
Perfect {010} imperfect {100}

Mohs Hardness

6-6.56-7
2 10
👆🏻

Chemical Composition

Ca2Al3(SiO4)(Si2O7)O(OH)
Ca2Al3(SiO4)3(OH)

Piemontite and Zoisite Chemical Formula

While comparing Piemontite and Zoisite 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 Zoisite chemical formula.

  • Chemical formula of Piemontite- Ca2Al3(SiO4)(Si2O7)O(OH)
  • Chemical formula of Zoisite- Ca2Al3(SiO4)3(OH)

Piemontite and Zoisite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Piemontite and Zoisite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Piemontite and Zoisite Optical Properties during the identification of gemstone. Specific gravity of Piemontite is 3.20-3.50 whereas that of Zoisite is 3.20-3.50.