Amethyst and Pyrophyllite Physical Properties

Amethyst

Pyrophyllite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble in common solvents

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.652.65-2.90

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

Gemstones (2009), Flexible Flexible fragments.

1.6 Cleavage

Indiscernible

{001} Perfect

1.7 Mohs Hardness

7Not Available

2 10

1.8 Chemical Composition

SiO₂

Al 2Si 4O 10(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Amethyst and Pyrophyllite Chemical Formula

While comparing Amethyst and Pyrophyllite 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 Amethyst and Pyrophyllite chemical formula.

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

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Amethyst and Pyrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Amethyst and Pyrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Pyrophyllite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.65-2.90 whereas that of Pyrophyllite is 2.65-2.90.