Major United States...and international retailers selling diamond jewellery are falling short on their promises to combat the trade in conflict diamonds...Out of 30 companies, 25 have failed to respond to Global Witness in writing about their policies on conflict diamonds and the self-regulation. They include international luxury jewellery companies like Bulgari, Cartier [part of Richemont], Harry Winston [part of Aber Diamond], Van Cleef & Arpels [part of Richemont] and Wempe, US jewellery chains like Littman Jewelers and Whitehall Jewelers and US department stores like Federated Department Stores, Inc. (parent company of Bloomingdales and Macy’s), and Saks Fifth Avenue...Only five companies out of 30 informed Global Witness in writing that they have a policy on conflict diamonds and are implementing the system of warranties: Fortunoff, Pampillonia, Tiffany & Co., the Signet Group and Zale Corporation. Tiffany & Co. stood out because it described how it has strengthened its sourcing and auditing policies to help ensure that it is not dealing in conflict diamonds.