18kt yellow gold and sterling silver Elements Eclipse diamond pendant necklace from DAVID YURMAN featuring 18kt yellow gold, sterling silver, lobster claw fastening, adjustable sliding fastening, mother-of-pearl, onyx, signature Cable motif design, round cut diamonds and engraved logo. 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..