Rutile and Blue John Physical Properties
Tenacity
Not Available
Not Available
Solubility
Insoluble in acids
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.20-4.30
3.00-3.25
Fracture
Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Not Available
Cleavage
{110} good, 100 moderate, parting on {092} and {011}
Not Available
Mohs Hardness
6-6.5
Not Available
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Rutile and Blue John Chemical Formula
While comparing Rutile and Blue John 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 Rutile and Blue John chemical formula.
- Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Blue John- CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Rutile and Blue John Specific Gravity
Another important criteria for qualitative analysis of gemstones is Rutile and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rutile and Blue John Optical Properties during the identification of gemstone. Specific gravity of Rutile is 3.00-3.25 whereas that of Blue John is 3.00-3.25.