While comparing Seraphinite and Afghanite 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 Seraphinite and Afghanite chemical formula.
Another important criteria for qualitative analysis of gemstones is Seraphinite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Seraphinite and Afghanite Optical Properties during the identification of gemstone. Specific gravity of Seraphinite is 2.55-2.65 whereas that of Afghanite is 2.55-2.65.