At this month’s Basel fair, find the high, the low, and the in-betweenThierry Andretta is banking on brisk business for one-of-a-kind jewels and timepieces as he prepares for the 2014 edition of the Baselworld luxury watch and jewelry fair, which runs at the convention center in Basel, Switzerland, from March 27 to April 3.“Luxury is going in this direction,” the CEO of Buccellati tells JCK. Andretta’s firm saw double-digit growth in the United States in 2013, which surely gave the partners at Milan-based private equity firm Clessidra SGR something to smile about; the firm bought a 70 percent stake in the Italian jewelry and watchmaker last spring.For the show, Andretta’s team is introducing a bridal jewelry collection for the first time in its 95-year history. “Our approach is widening,” Andretta says. “We are always making important pieces, so this is perfect for us to