sterling silver Waves Skull diamond ring (24mm)sterling silver pav set black diamonds totalling 0. 15 carats ring: 11mm 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.