Ruby and London blue topaz Physical Properties

Ruby and London blue topaz Chemical Formula

While comparing Ruby and London blue topaz 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 Ruby and London blue topaz chemical formula.

• Chemical formula of Ruby- Al ₂ O ₃
• Chemical formula of London blue topaz- Al2SiO4(F,OH)2

Ruby and London blue topaz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and London blue topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and London blue topaz Optical Properties during the identification of gemstone. Specific gravity of Ruby is whereas that of London blue topaz is .