GIVING>>?Jewelers for Children has donated $25,000 to the American Red Cross Disaster Relief fund to support recovery efforts for Hurricane Sandy.>>?The Diamond Em­pow­er­ment Fund has donated $10,000 to the Flaviana Matata Foundation, which empowers young orphan girls through education, ­training, and micro-finance ­projects in Tanzania.COMINGS AND GOINGSNorman M. Miller>>?Niche Media has appointed Norman M. Miller to executive director of luxury brands. Miller will focus primarily on watch and jewelry accounts for Niche’s 10 luxury lifestyle magazines.>>?Matt Lauzon, the founder of custom jewelry e-tailer Gemvara, stepped down as CEO. Chief operating officer Janet Holian has been promoted to interim CEO.  Lauzon will serve as chairman, replacing Deb Bessemer.>>?Two longtime David Yurman top executives—chief operating officer David Minster and