While comparing Sonolite and Demantoid 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 Sonolite and Demantoid chemical formula.
Another important criteria for qualitative analysis of gemstones is Sonolite and Demantoid Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sonolite and Demantoid Optical Properties during the identification of gemstone. Specific gravity of Sonolite is 3.77-3.95 whereas that of Demantoid is 3.77-3.95.