Ralph Lauren, creator of the polo pony and rider motif for clothes, is unveiling a fine-jewelry line with Richemont, the luxury goods group that owns Cartier. The new venture—dubbed The Polo Ralph Lauren Watch and Jewelry Co.—represents firsts for both companies: a joint venture with a fashion designer for Richemont and a push into fine jewelry for Lauren.

Both firms are close-mouthed on details like design and inspiration, but a spokesperson for Lauren did reveal that merchandise will be made in Switzerland, and that Lauren is “an avid watch collector.” Expect precious offspring to surface in fall 2008, in Ralph Lauren boutiques and luxury jewelry stores worldwide.