Star Sapphire and Natrolite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
2.20-2.26
Fracture
Not Available
Uneven, Brittle, Metallic, Gemstones (2009)
Cleavage
Not Available
Perfect on {110}
Mohs Hardness
Not Available
5-5.5
Chemical Composition
Al 2O 3Ulrich Henn and Claudio C.
Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Star Sapphire and Natrolite Chemical Formula
While comparing Star Sapphire and Natrolite 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 Natrolite chemical formula.
- Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.
- Chemical formula of Natrolite- Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Star Sapphire and Natrolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Star Sapphire and Natrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Sapphire and Natrolite Optical Properties during the identification of gemstone. Specific gravity of Star Sapphire is 2.20-2.26 whereas that of Natrolite is 2.20-2.26.