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Pyrophyllite
Pyrophyllite

Amethyst
Amethyst



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Pyrophyllite
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Amethyst

Pyrophyllite and Amethyst Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
insoluble in common solvents
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.65-2.90
2.65
1.5 Fracture
Gemstones (2009), Flexible Flexible fragments.
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
1.6 Cleavage
{001} Perfect
Indiscernible
1.7 Mohs Hardness
Not Available
7
1.8 Chemical Composition
Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
SiO2

Pyrophyllite and Amethyst Chemical Formula

While comparing Pyrophyllite and Amethyst 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 Pyrophyllite and Amethyst chemical formula.

  • Chemical formula of Pyrophyllite- Al 2Si 4O 10(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Amethyst- SiO2

Pyrophyllite and Amethyst Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrophyllite and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrophyllite and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Pyrophyllite is 2.65 whereas that of Amethyst is 2.65.

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