18kt yellow gold Crescent diamond necklace18kt yellow gold polished finish cable link chain pav set round cut white diamonds totaling 1. 47 carats lobster claw fastening length: 16" 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. Hallmarked in the United Kingdom at the London Assay Office.