Rubellite and Lazurite Physical Properties

Rubellite and Lazurite Chemical Formula

While comparing Rubellite and Lazurite 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 Rubellite and Lazurite chemical formula.

• Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
• Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Rubellite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 2.75 whereas that of Lazurite is 2.75.