18kt yellow gold Block-Chain emerald baguette link necklace18kt yellow gold polished effect thick block chain link design baguette cut emeralds totaling 1. 45 carats lobster claw fastening length: 18" 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.