Emilie Shapiro designed her birth-month stacking rings to keep her loved ones close at hand. "I wear a ring for each," she says. "I just love the way they nestle together on my finger." To create them, she uses the ancient art of lost-wax casting, carving a wax mold and filling it with molten, recycled brass. Once the metal cools in the ring shape, she hammers it to give it a glinty, irregular texture and hand-bezel-sets a birth month–colored cubic zirconia gemstone. Beautiful on their own…