During the holidays, when commercialism can overwhelm sentiment, it's reassuring to know that American retail jewelers really are a good-hearted bunch, driven as much by the Golden Rule as by selling their gold and silver wares. As a holiday gift to you, we offer this statistical snapshot, based on a new JCK national survey of hundreds of businesses, of how U.S. jewelers extend charity all year long in their communities. Helping many. Four out of five jewelers (85.5%) actively support at least one charity, found JCK's poll, and more than a third (35.7%) support several. Sierra West Jewelers, Orem, Utah, for example, aids 18 different local charities, such as the Miss Utah Scholarship pageant, the Even Start Family Literacy program, and local police and ballet fund-raisers. "We believe in their causes, and we're trying to give something back [to the community]," explains R. Timothy Bran