Star Sapphire and Kornerupine Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
3.25-3.45
Fracture
Not Available
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven
Cleavage
Not Available
Good on {110}
Mohs Hardness
Not Available
6.5
Chemical Composition
Al 2O 3Ulrich Henn and Claudio C.
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Star Sapphire and Kornerupine Chemical Formula
While comparing Star Sapphire and Kornerupine 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 Star Sapphire and Kornerupine chemical formula.
- Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
- Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Star Sapphire and Kornerupine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Star Sapphire and Kornerupine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Kornerupine Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 3.25-3.45 whereas that of Kornerupine is 3.25-3.45.