Retailer J. Edwards Diamonds of Albuquerque, N.M., has taken the Better Business Bureau of the Southwest to court over its rating on the organization's Web site, according to New Mexico Business Journal. J. Edwards was assigned a D, the second-lowest of 11 possible grades, which the store calls “inconceivable.” Charles & Colvard said that George R. Cattermole, current director of the moissanite manufacturer, has been elected chairman of its board. Richard A. Bird is the company' new chief executive officer. Castaldo Products Inc., Franklin, Mass., manufacturer of molding rubber for lost-wax casting of precious-metal jewelry, has purchased the assets of Western Wax Inc., manufacturer of Plast-O-Wax jewelry injection wax. The two products can now be purchased and shipped together, the companies said. Jewelry designer and manufacturer Caroline Ballou, a division of LeStage Man