Moonstone and Alabaster Physical Properties

Moonstone

Alabaster

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.56-2.602.30

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann

Cleavage

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

None

Mohs Hardness

6-6.52

2 10

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Chemical Composition

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

CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)

Moonstone and Alabaster Chemical Formula

While comparing Moonstone and Alabaster 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 Alabaster chemical formula.

Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈
Chemical formula of Alabaster- CaSO 4 · 2H 2OWalter Schumann , Gemstones of the world (2001)

Compare Semi Precious Gemstones

Moonstone Vs Rubellite

Moonstone Vs Schorlomite

Moonstone Vs Simpsonite

Moonstone and Alabaster Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moonstone and Alabaster Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Alabaster Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 2.30 whereas that of Alabaster is 2.30.