silver-tone 18K white gold pear-shape colombian emerald round brilliant cut yellow diamonds round brilliant cut white diamonds double halo setting Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery. Includes an IGI Diamond Report. This certification from the International Gemological Institute assesses diamonds' cut, colour, clarity and carat weight according to strict international standards.