For independent jewelry retailers, no season mocks the notion of spare time quite like the holidays. Extended hours, temporary staffers, huge inventory turnover—not to mention the challenge of maintaining stellar customer service for a clientele on steroids—leave most jewelers with just enough energy to crawl into bed at the end of each day. That’s why we asked some of the industry’s go-to vendors of tools and supplies for recommendations on gadgets that make short work out of long projects.Inventory SolutionRadio frequency identification (RFID) inventory is as easy as waving a magic wand. Cat Dunbar, marketing coordinator for Kassoy, likes Gem-Where’s RFID Package (starting at $5,995, kassoy.com), which gives retailers the ability to count hundreds of tags per minute by swiping the handheld reader over a tray or display case. “RFID increases the speed and accuracy of physica