Right-hand rings gain popularity among unmarried women and give new married to "the solitaire." Single and Christina Elam did not have a particular item in mind when she walked into the jewelry store on a casual shopping spree. The Kansas City, Mo., real estate agent had been ignored in the previous store she visited because she was wearing jeans and tennis shoes. But in this jewelry store, the saleswoman offered to take some rings out to show her. Once the saleswoman pulled a threeband, white gold, diamond ring from the case, Elam says she had to have it. "I didn't have the intention of buying a big ticket item," she says. "It wasn't in my price range at all." Elam says because she had a good month of sales at her job, she decided to purchase the ring for herself. She bought the ring specifically to wear on her right hand. A New Trend Diamond Trading Company is the marketing branch of DeBeers, the largest