18kt yellow gold butterfly fastening stud design round cut diamonds totalling 0.59 carats for pierced ears These earrings come as a pair. earrings: 8mm To ensure the shine and polish of your David Yurman piece, wash with a little non-bleach, soapy water and wipe clean with a soft cloth. 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.