Corundum and Moonstone Physical Properties
Tenacity
Brittle
Not Available
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
2.56-2.60
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
None – parting in 3 directions
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
Corundum and Moonstone Chemical Formula
While comparing Corundum 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 Corundum and Moonstone chemical formula.
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
Corundum and Moonstone Specific Gravity
Another important criteria for qualitative analysis of gemstones is Corundum and Moonstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Moonstone Optical Properties during the identification of gemstone. Specific gravity of Corundum is 2.56-2.60 whereas that of Moonstone is 2.56-2.60.