Capetown Diamond: America''s Foremost Discounter of Rolex, Cartier, Breitling & Jewelry. Watch Repair, & Certified Diamonds Since 1969, Capetown Diamond has been the Class Act amongst Upscale Discounters of New & Certifed Pre-Owned Certified Diamonds, Precious Jewelry, and Fine Swiss Watches such as Rolex, Cartier, Patek Philippe, Ebel, etc.