1. Las VegasThree ways to describe JCK Las Vegas 2013: busy; buoyant; and back, baby! Not only was show traffic up—5 percent at JCK and 9 percent at LUXURY—but so were people’s moods, resulting in the most positive trade show this industry has seen in years. Viridiana ­Aparicio, sales associate for Van Nuys, Calif.–based Vanna K, was among the exhibitors picking up good vibrations: “The retailers we’ve met with are really excited to buy and are in a great mood.” Retailers rejoiced that real recovery seemed to finally be in the air: “Everyone is very optimistic, in stark contrast to a few years ago,” says Robert Mednikow, owner of Mednikow Jewelers in Memphis, Tenn. “A few years back, we gave token orders just to help our suppliers stay in business. But now we are buying Christmas inventory and placing big orders.” Among the trends spotted: blue hues like tanzanite