Sillimanite and Celestine Physical Properties
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
3.90-4.00
Fracture
Splintery
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
{010} perfect
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
6-7.5
3-3.5
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sillimanite and Celestine Chemical Formula
While comparing Sillimanite and Celestine 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 Sillimanite and Celestine chemical formula.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sillimanite and Celestine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sillimanite and Celestine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Celestine Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 3.90-4.00 whereas that of Celestine is 3.90-4.00.