black/turquoise/pink geometric beads lobster claw fastening silver-tone hardware adjustable-length chain 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. Necklace Size and Fit - Length when open: 51.0 Centimetres. Minimum Length: 48.0 Centimetres.