Rose Quartz with its translucent, pink color that can range from pale to deep has a chemical composition of SiO2 (silicon dioxide) and it is of pink color because of the presence of trace elements like titanium, iron or manganese and it has a crystal structure with a trigonal crystal system. With a density of around 2.65 g/cm³, it has a hardness of 7 on the Mohs hardness scale.