18kt yellow gold Starry Night Partway diamond necklace from KWIAT featuring 18kt yellow gold, polished finish, articulated links, ball chain, claw/prong setting, round brilliant cut diamonds, GH/VS2-SI1 diamonds colour and clarity and box-clasp fastening. 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..