Rossmanite and Sard Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3
2.58-2.63
Fracture
Brittle, Metallic
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
None
Not Available
Mohs Hardness
Not Available
6.5-7
Chemical Composition
◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
SiO 2Ulrich Henn and Claudio C.
Rossmanite and Sard Chemical Formula
While comparing Rossmanite and Sard 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 Rossmanite and Sard chemical formula.
- Chemical formula of Rossmanite- ◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
- Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.
Rossmanite and Sard Specific Gravity
Another important criteria for qualitative analysis of gemstones is Rossmanite and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rossmanite and Sard Optical Properties during the identification of gemstone. Specific gravity of Rossmanite is 2.58-2.63 whereas that of Sard is 2.58-2.63.