PARSIPPANY, N.J.–Retailers who submit an entry to the Display Your Diamonds and Someone’s in the Kitchen with Diamonds promotions at Swiss Diamond’s Booth 3542-44, at the Gourmet Housewares Show next month, will double their chances of winning. To qualify, the retailer is then required to schedule a Swiss cuisine-related cooking class and/or build a Swiss Diamond cookware display in a store or window. The grand prize is a trip to Switzerland, and the contest is running through December 15.