Ulexite and Blue John Physical Properties

Ulexite and Blue John Chemical Formula

While comparing Ulexite 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 Ulexite and Blue John chemical formula.

• Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Ulexite and Blue John Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ulexite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ulexite and Blue John Optical Properties during the identification of gemstone. Specific gravity of Ulexite is 3.00-3.25 whereas that of Blue John is 3.00-3.25.