platinum diamond stud earrings from KWIAT featuring platinum, polished finish, claw/prong setting, round brilliant cut diamonds, post-back fastening, for pierced ears and I/SI2 diamond colour and clarity. These earrings come as a pair.. 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..