Diane Warga-Arias has joined Gem Certification and Appraisal Lab, which is owned by Collector's Universe, an authenticator of coins, stamps, and other high-value items. GCAL, based in New York's Diamond District, owns the Gemprint diamond identification and registration system, which according to Warga-Arias, will be offered exclusively through GCAL. The Women's Jewelry Association has announced the appointment of Ann Schonwetter Arnold, chief financial officer/vice president of Lieberfarb Inc., as its new president, succeeding Anna Martin of ABN AMRO. Arnold has been a member of the WJA board for the past five years, serving as treasurer and, since 2004, its first vice president. Arnold is the eighth president of the national volunteer organization representing the interests of professional women in the jewelry, watch, and related industries. She will serve f

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