The following are some of the major diamond mining companies and jewelry retailers: # Harry Winston Diamond Corporation (HWD) is involved in the mining and marketing of diamonds, and retailing fine jewelry and watches. This Toronto, Canada-based company was founded in 1980. It owns almost half of the Diavik Diamond Mine located in the Northwest Territories, Canada. The stock has a P/E of 17, a PEG of 1.19, and pays a yield of 0.7%. # Mountain Province Diamonds Inc. (MDM) is a Toronto, Canada-based natural resource property exploration and development company which mines for diamonds. The company recently reported negative earnings of -$0.01 per share. # Anglo American PLC (AAUK) which trades on NASDAQ, is a miner of platinum, gold, diamonds, coal, and industrial minerals. The stock has a P/E of 12, a PEG of 0.44, and pays a yield of 2.6%, with a market cap of $88 billion. # Rio Tinto plc (RTP) is a company that mines for everything from iron ore to aluminum to copper to diamonds to coal to talc. Although it is based in London, the company has operations in North America, Europe, Asia, Australia, and New Zealand. This stock has a P/E ratio of 22, a PEG of 0.59, and a yield of 1.3%. # BHP Billiton Ltd. (BHP) and BHP Billiton plc (BBL) is the world's largest mining company, iron ore, diamonds, manganese, coal, copper, nickel, petroleum and bauxite. The Australian BHP Billiton Limited and the British BHP Billiton Plc trade separately with separate shareholders but they operate as one business with the same boards of directors and one management organization. The P/E is 19, the PEG is 2.02, and the yield is 1.3%. # Signet Group plc (SIG), operates H.Samuel The Jeweler, Ernest Jones, The Diamond and Watch Specialist, and Leslie Davis retailers in the United Kingdom, and Kay Jewelers, Jared The Galleria of Jewelry, and other retailers in the United States. The stock has a P/E of 12, a PEG of 0.94 and a yield of 4.8%. # Zale Corporation (ZLC) is a jewelry retailer which has six brands: Zales Jewelers, Zales Outlet, Gordon's Jewelers, Bailey Banks & Biddle, Peoples Jewellers and Mappins Jewellers. The stock has a P/E of 33. # Tiffany & Co. (TIF), founded in 1837, is one of the top jewelry companies in the world, with over 60 U.S. stores and over 100 international locations. The metric carat as a weight standard for gems was developed by a Tiffany gemologist. The New York City flagship store is home to the 128-carat Fancy Yellow Tiffany Diamond. The stock has a P/E of 19, a PEG of 1.2, and a yield of 1.4%. # Blue Nile Inc. (NILE), founded in 1999, is a leading web-based retailer of diamonds and fine jewelry, and the largest online retailer of certified diamonds. The stock has a P/E of 44 and a PEG of 2.02.