18K white gold prong-set emerald-cut red rubies totalling 2.86 carats prong-set mixed-cut white diamonds totalling 1.47 carats polished finish claw setting split shank 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.