Piemontite and Moonstone Physical Properties

Piemontite

Moonstone

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

-99992.56-2.60

1 7.18

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Fracture

Uneven, Splintery

Uneven, ConchoidalWalter Schumann

Cleavage

[001] good, [100] distinct

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

Mohs Hardness

6-6.56-6.5

2 10

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Chemical Composition

Ca2Al3(SiO4)(Si2O7)O(OH)

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

Piemontite and Moonstone Chemical Formula

While comparing Piemontite 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 Piemontite and Moonstone chemical formula.

Chemical formula of Piemontite- Ca2Al3(SiO4)(Si2O7)O(OH)
Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

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Piemontite and Moonstone Specific Gravity

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