REMEMBERED>>?Jacob Zupnick, treasurer of the Diamond Dealers Club since 2011, died of cancer June 30. He was 67.>>?­Jeweler Alan H. Friedman, colored-diamond dealer and part of the family that once ran Borsheims, died of an apparent heart attack June 21 at age 60.>>?Frank Fialkoff, CEO of Haskell Jewels, died June 8 at age 70.>>?David Balogh, founder of Balogh Jewelers in Miami Beach, died June 4 at his home in Miami. He was 94.>>?Henry Platt, the former chairman and CEO of Tiffany & Co. who is credited with introducing tanzanite and tsavorite, died July 22 at age 91.>>?Herb Lewis, a respected industry leader and top executive at Bulova and Allison-Kaufman, died June 9, just days after his 100th birthday.COMINGS AND GOINGSCeCe Coffin>>?David Yurman has named CeCe Coffin to head global communications. She was most recently senior vice preside