sterling silver twisted band morganite totalling 1.50 carats pavé-set diamonds totalling 0.11 carats stone: 7mm 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.