For the couple behind Sutra Jewels, a chance meeting at GIA blossomed into a fairy-tale romance and jewelry success storyWhen a start-up like Sutra opens for business in the middle of an economic downturn and becomes an international sensation with a devoted celebrity following—all before its fifth anniversary—the story begs to be told. Yet it’s been a quiet ascent without much self-promotion for Arpita and Divyanshu Navlakha, the humble couple behind the couture jewelry line often worn by Oscar and Country Music Award winners. In fact, while countless paparazzi shots of stars wearing Sutra flood the Internet, Arpita’s modest biography offers few glimpses of the personalities behind the brand.Earrings in 18k gold with opals, diamonds, sapphires, and emeralds; $10,600; Sutra Jewels, Houston; 713-988-8210; sutrajewels.comThe couple’s lifelong love affair with gems is the real sto