rhodium vermeil laboratory-grown pear-cut and round-cut pink sapphires totalling 83 carats laboratory-grown round-cut and pear-cut gemstones simulated pink and white diamonds totalling 104.06 carats polished finish 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.