Moonstone and Pyrope Physical Properties

Moonstone

Pyrope

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Physical Properties

Tenacity

Solubility

insoluble in water

Durability

Specific Gravity

2.56-2.603.62-3.87

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann

Conchoidal

Cleavage

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

None

Mohs Hardness

6-6.57-7.5

2 10

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Chemical Composition

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

Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Moonstone and Pyrope Chemical Formula

While comparing Moonstone and Pyrope 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 Moonstone and Pyrope chemical formula.

Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈
Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Compare Semi Precious Gemstones

Moonstone Vs Rubellite

Moonstone Vs Schorlomite

Moonstone Vs Simpsonite

Moonstone and Pyrope Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moonstone and Pyrope Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Pyrope Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 3.62-3.87 whereas that of Pyrope is 3.62-3.87.