Do the MathYou don’t often find a mathematician–turned–jewelry designer, but when you consider that the signature style of Apeksha Mehta’s line is geometry, her recently debuted collection makes perfect sense. The onetime math and physics major abandoned a career in finance two years ago—Mehta realized that she lacked not only a passion for the job but also weekends off—to launch Design by Auro in August 2012. (Her career change also makes perfect sense: Mehta comes from a family of jewelers.)Design by Auro hinged bangle in silver with shaded enamel; $350She relocated to New York City from Belgium and introduced a line in sterling and enamel starting at $65 retail. The designs certainly channel her inner arithmetician: Pieces are symmetrical, with flow—including in a gradient of colors, wave effects, and rotating movement of sphere motifs. “I feel like this makes our jewe