18kt yellow gold 2.00ct round brilliant cut diamonds butterfly fastening for pierced ears signature Windsor-setting 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.