Boston’s jewelry scene has suffered some upheaval in recent years, which may seem unusual for such a staid industry. But the Internet has pulled customers away, as have changing luxury tastes, leaving retailers hurriedly rethinking their business models. Many local stores, famous for years in the city and beyond, have relocated, downsized, and reinvented themselves. New competitors have opened their doors, while a few — institutions in their own right — quietly closed theirs. Into this shifting landscape comes Brilliant Earth, now open at 38 Newbury St. Launched in San Francisco in 2005 by Beth Gerstein (MIT grad) and Eric Grossberg (Harvard grad), Brilliant Earth focuses on ethically sourced jewelry. Pieces are made with recycled precious metals, and stones are said to be “beyond conflict free,” a smart combination for today’s savvy customers. Open Wednesday through Sunday, 10 a.m. to 7 p.m., by appointment. firstname.lastname@example.org.