Architect turned jeweler William Ehrlich (williamehrlichjewelry.com) approaches jewelry as though he were designing a building. Using CAD software, he assembles his creations in layers, keeping proportion in mind. The CAD designs are laser-cut in sheets of silver, and the metal shapes are assembled with gemstones and diamonds by his eponymous company’s jewelers. “With silver sheets I can create large-scale pieces that aren’t heavy,” says the New York–based designer, whose pieces ($5,000 to $75,000) are sold in the city at Jason Jacques Gallery (jasonjacques.com). Many of his designs bear coatings in striking colors, such as red or electric blue, that enhance the stones’ hues.