Authentic Tiffany & Co. Machine-made of brilliantly clear crystal glass. Customized bowls are expertly proportioned and shaped to highlight the wine's distinctive bouquet. The rim of each tumbler is specifically designed to direct the flow of wine over the palate so that key flavors are emphasized. Made in Germany by Riedel, a family-owned company famous for exquisite glassware since 1756. Set of two. Info 23.9 fl.-oz. cap., 4 1/2" high. These are limited addition that Riedel for Tiffany & Co and marked Riedel on bottom Come with Tiffany original box