The Swarovski Xirius Flat Back reflects a dazzling array of light in a compact space. This 7mm flat back rhinestone in Crystal Scarabaeus Green offers a dark, mysterious green with shades of purple and blue, reminiscent of Egyptian mythology. These loose crystal flat backs are backed with platinum foiling for extra brilliance and protection. Swarovski Crystal Flat Backs are easy to apply to a variety of materials using standard one of two component glues.