3319 Cady’s Alley N.W., Washington, D.C.Tucked halfway down Cady’s Alley, a charming shopping row in Washington, D.C.’s Georgetown neighborhood, is a jewelry boutique that holds its own, designwise, with the street’s many high-end home decor shops. Jewelers’Werk, a 268-square-foot haven for maverick jewelry design from around the globe, feels more like a gallery than a typical jewelry store. The space itself is clean, white, and spare. And the inventory prizes innovation over commercial accessibility. “We carry what I call artist-jewelers,” explains owner and onetime jeweler Ellen Reiben. “These are not fashion-based designers and they’re not commercial. They have a vision and an art orientation.”ORGANIC EVOLUTIONIn 1988, Reiben took over the store, then called VO ­Gallery and located in downtown D.C. The owner had passed away in a tragic car accident. “She was Dut