Moonstone and Chalcedony Physical Properties

Moonstone

Chalcedony

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Physical Properties

Tenacity

Solubility

Soluble

Durability

Specific Gravity

2.56-2.602.55-2.70

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann

Uneven, Splintery, Conchoidal

Cleavage

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

Absent

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

SiO₂

Moonstone and Chalcedony Chemical Formula

While comparing Moonstone and Chalcedony 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 Chalcedony chemical formula.

Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈
Chemical formula of Chalcedony- SiO₂

Compare Semi Precious Gemstones

Moonstone Vs Rubellite

Moonstone Vs Schorlomite

Moonstone Vs Simpsonite

Moonstone and Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moonstone and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.