COMINGS AND GOINGS>> Stuller promoted Stanley Zale to merchandise vice president of diamonds and gemstones. He was previously VP of only the diamond unit.>> Citizen Watch Company of America hired Scott Wolfe as senior vice president of merchandising for the Citizen Watch Company of America. Wolfe will be responsible for product development, merchandising, ­packaging, and in-store displays used throughout the U.S., Canada, and U.K. markets.Duvall O’Steen>> Duvall O’Steen has joined Yvel, the Ramat Motza, Israel–based pearl jewelry manufacturer. O’Steen will represent the brand in the U.S. and Canadian markets. She joins Yvel after spending 11 years with the World Gold Council’s U.S. division.  >> Ostbye hired Dan Bredow as the national sales manager for the OstbyeBlue division.>> Joel Hassler will assume ownership of Rasmussen Diamonds in Raci