18kt yellow gold Punched Cord Le 2.5g diamond bracelet from LE GRAMME featuring 18kt yellow gold, polished finish, adjustable-length cord, engraved logo, pavé setting and black diamonds. Hallmarked in the United Kingdom at the London Assay Office.. 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..