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Feldspar
Feldspar

Moonstone
Moonstone



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Feldspar
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Moonstone

Feldspar and Moonstone Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.56-2.752.56-2.60
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Uneven, ConchoidalWalter Schumann

Cleavage

two or three
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

Mohs Hardness

6-6.56-6.5
2 10
👆🏻

Chemical Composition

KAlSi3O8
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8

Feldspar and Moonstone Chemical Formula

While comparing Feldspar 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 Feldspar and Moonstone chemical formula.

  • Chemical formula of Feldspar- KAlSi3O8
  • Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8

Feldspar and Moonstone Specific Gravity

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