Moonstone and Andradite Physical Properties

Moonstone

Andradite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

2.56-2.603.70-4.10

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann

Conchoidal, Uneven

Cleavage

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

none

Mohs Hardness

6-6.56.5-7

2 10

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Chemical Composition

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

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Moonstone and Andradite Chemical Formula

While comparing Moonstone and Andradite 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 Andradite chemical formula.

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

Compare Semi Precious Gemstones

Moonstone Vs Rubellite

Moonstone Vs Schorlomite

Moonstone Vs Simpsonite

Moonstone and Andradite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moonstone and Andradite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Andradite Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 3.70-4.10 whereas that of Andradite is 3.70-4.10.