Moonstone and Ettringite Physical Properties

Moonstone

Ettringite

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Physical Properties

Tenacity

Solubility

Partially soluble in water

Durability

Specific Gravity

2.56-2.601.77

1 7.18

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Fracture

Uneven, ConchoidalWalter Schumann

Cleavage

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

Perfect on {10 1 0}

Mohs Hardness

6-6.52-2.5

2 10

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Chemical Composition

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

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Moonstone and Ettringite Chemical Formula

While comparing Moonstone and Ettringite 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 Ettringite chemical formula.

Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Compare Semi Precious Gemstones

Moonstone Vs Rubellite

Moonstone Vs Schorlomite

Moonstone Vs Simpsonite

Moonstone and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moonstone and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 1.77 whereas that of Ettringite is 1.77.