Moonstone and Corundum Physical Properties

Moonstone

Corundum

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.56-2.603.90-4.05

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

Uneven, Uneven, Gems, Difficult, Fibrous

1.6 Cleavage

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

None – parting in 3 directions

1.7 Mohs Hardness

6-6.59

2 10

1.8 Chemical Composition

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

Al 2O 3Arthur Thomas , Gemstones (2009)

Moonstone and Corundum Chemical Formula

While comparing Moonstone and Corundum 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 Corundum chemical formula.

Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈
Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)

Compare Semi Precious Gemstones

Moonstone Vs Peridot

Moonstone Vs Lehsunia

Moonstone Vs Alexandrite

Moonstone and Corundum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moonstone and Corundum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Corundum Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 3.90-4.05 whereas that of Corundum is 3.90-4.05.