While comparing Bastnsite and Crystal Quartz 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 Bastnsite and Crystal Quartz chemical formula.
Another important criteria for qualitative analysis of gemstones is Bastnsite and Crystal Quartz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bastnsite and Crystal Quartz Optical Properties during the identification of gemstone. Specific gravity of Bastnsite is Not Available whereas that of Crystal Quartz is Not Available.