COMINGS AND GOINGS >>?Trollbeads has appointed Robin Aagaard (pictured, inset) as president and CEO of its North American office. He is the eldest son of the brand’s founders, Lisa and Peter Aagaard. >>?Jewelers Vigilance Committee has named Miya Owens assistant counsel. Owens replaces Sara Yood, now senior counsel for the organization. >>?Weston Jewelers in Weston, Fla., has named Alan Finkel and Natalie Goldberg to its sales team. Both came from Levinson Jewelers. >>?HRD Antwerp announced that Peter Macken has been “relieved of his duties as CEO as a result of differing strategic views.” >>?Henri Barguirdjian has stepped down after 16 years as CEO of Graff North America. No replacement had been named at press time. >>?Tiffany & Co. has appointed Mark Erceg to be its next executive vice president and chief financial of