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Alexandrite
Alexandrite

Pyrite
Pyrite



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Alexandrite
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Pyrite

Alexandrite and Pyrite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
insoluble in water
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.69-3.815.00-5.20
Amber
1 7.18
1.5 Fracture
Not Available
Uneven, Conchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
1.6 Cleavage
1,1 ; 3,2.
Indistinct on {001}; partings on {011} and {111}
1.7 Mohs Hardness
8.56-6.5
Amber
2 10
1.8 Chemical Composition
BeAl 2 O 4
FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Alexandrite and Pyrite Chemical Formula

While comparing Alexandrite and Pyrite 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 Alexandrite and Pyrite chemical formula.

  • Chemical formula of Alexandrite- BeAl 2 O 4
  • Chemical formula of Pyrite- FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Alexandrite and Pyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.