18kt white gold Lyric diamond necklace from KWIAT featuring 18kt white gold, polished finish, delicate chain, bezel setting, round brilliant cut diamonds and GH/VS2-SI1 diamond colour and clarity. Includes a GIA report. This certification from the Gemological Institute of America assesses diamonds' authenticity as well as cut, colour, clarity and carat weight.. 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..