18k yellow gold vermeil blue spinels emeralds green tourmalines white diamonds freshwater pearl butterfly detail polished finish pearl embellishment pavé-set round-cut blue spinels pavé-set round-cut emeralds pavé-set round-cut green tourmalines pavé-set round-cut white diamonds 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.