Pyrite and Moonstone Physical Properties

Pyrite

Moonstone

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Physical Properties

Tenacity

Brittle

Solubility

insoluble in water

Durability

Specific Gravity

5.00-5.202.56-2.60

1 7.18

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Fracture

Uneven, Conchoidal, ConchoidalWalter Schumann

Uneven, ConchoidalWalter Schumann

Cleavage

Indistinct on {001}; partings on {011} and {111}

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

Mohs Hardness

6-6.56-6.5

2 10

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Chemical Composition

FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

Pyrite and Moonstone Chemical Formula

While comparing Pyrite and Moonstone 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 Pyrite and Moonstone chemical formula.

Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

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Pyrite and Moonstone Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pyrite and Moonstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Moonstone Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 2.56-2.60 whereas that of Moonstone is 2.56-2.60.