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