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Apophyllite
Apophyllite

Amethyst
Amethyst



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Apophyllite
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Amethyst

Apophyllite 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
2.30-2.50
2.65
1.5 Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
1.6 Cleavage
Perfect on (001)
Indiscernible
1.7 Mohs Hardness
4.5-5
7
1.8 Chemical Composition
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
SiO2

Apophyllite and Amethyst Chemical Formula

While comparing Apophyllite 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 Apophyllite and Amethyst chemical formula.

  • Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
  • Chemical formula of Amethyst- SiO2

Apophyllite and Amethyst Specific Gravity

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

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