How can I tell if my new Tiffany & Co. merchandise is genuine?

Genuine Tiffany & Co. merchandise is available only through Tiffany & Co. stores and boutiques, Tiffany & Co. catalogues and our Tiffany websites. For further assistance, please contact Client Care Toll Free on 0800 891 47. Our hours of business are Monday to Friday 10:00 - 19:00; closed on weekends and public holidays in the UK.