RAPAPORT...Sam Ziefer, a veteran of the jewelry industrywith 50 years of experience, has joined auction house Fortuna as executive vicepresident of business development. He will focus on building strategicpartnerships for the New York-based company and strengthening its marketposition across the US, it said Monday. Fortuna specializes in auctions ofjewelry and watches, and is planning "rapid growth in 2019 and beyond." Ziefer was most recently vice president ofsales at White Pine Trading, which deals in recycled diamonds, jewelry andwatches. He previously led the retail division at Circa, a buyer of pre-ownedjewelry. "It isan exciting time to join Fortuna," Ziefer said. "I've been in this industry fora long time, and Fortuna is a breath of fresh air...It's the right time toexpand, and I'm proud to be part of it."Image: Sam Ziefer. (Fortuna)