18kt rose gold polished finish open cuff design engraved detail bezel setting round cut pink sapphire engraved logo 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. Your purchase will arrive to you in its original packaging. This piece comes with a certificate of authenticity.