18kt white gold/rhodium vermeil polished finish prong-set multi-cut white laboratory-grown diamonds totalling 143.5 carats prong-set marquise-cut laboratory-grown pink diamonds totalling 7.8 carats prong-set princess-cut laboratory-grown canary diamonds totalling 15.7 carats box-clasp fastening 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.