Quartz Stone is readily available because it is found in abundance and has many different varieties. Pure or clear Quartz stone is also known as rock crystal, as Quartz has a crystalline structure. Common varieties of coloured Quartz stone include - Rose Quartz, Smoky Quartz, Citrine and Amethyst. Mix clear crystal Quartz with strong colours for contrasting jewellery designs. Use Rose Quartz stone for subtle, feminine and romantic designs.