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Forsterite
Forsterite

Piemontite
Piemontite



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Forsterite
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Piemontite

Forsterite and Piemontite Physical Properties

Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

3.23-3.26-9999
1 7.18
👆🏻

Fracture

Conchoidal
Uneven, Splintery

Cleavage

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

Mohs Hardness

6.5-76-6.5
2 10
👆🏻

Chemical Composition

Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
Ca2Al3(SiO4)(Si2O7)O(OH)

Forsterite and Piemontite Chemical Formula

While comparing Forsterite and Piemontite 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 Forsterite and Piemontite chemical formula.

  • Chemical formula of Forsterite- Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Piemontite- Ca2Al3(SiO4)(Si2O7)O(OH)

Forsterite and Piemontite Specific Gravity

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