18kt yellow gold citrine totalling 4.00 carats pavé-set diamonds totalling 0.28 carats stone: 8mm earrings: 11mm 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. 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.