Londonite and Rock Crystal Physical Properties

Londonite and Rock Crystal Chemical Formula

While comparing Londonite and Rock Crystal 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 Londonite and Rock Crystal chemical formula.

• Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
• Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)

Londonite and Rock Crystal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Londonite and Rock Crystal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Londonite and Rock Crystal Optical Properties during the identification of gemstone. Specific gravity of Londonite is 2.65 whereas that of Rock Crystal is 2.65.