Forsterite and Blue John Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.23-3.26
3.00-3.25
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Not Available
Cleavage
Perfect on {010} imperfect on {100}
Not Available
Mohs Hardness
6.5-7
Not Available
Chemical Composition
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Forsterite and Blue John Chemical Formula
While comparing Forsterite 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 Forsterite and Blue John chemical formula.
- Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Blue John- CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Forsterite and Blue John Specific Gravity
Another important criteria for qualitative analysis of gemstones is Forsterite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Forsterite and Blue John Optical Properties during the identification of gemstone. Specific gravity of Forsterite is 3.00-3.25 whereas that of Blue John is 3.00-3.25.