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Ecolin Co. Inc. has been in the fine jewelry business since 1971. Located in Port Jefferson, N.Y., it represents various leading jewelry and watch designers as well as manufacturers of custom and one of a kind piece. The jewelry store offers an array of services, such as model making, stone setting, prong repair, engraving, pearl stringing, cad/cam services and appraisals. Ecolin Co. Inc. offers a range of engagement rings, women s and men s wedding bands, rings, earrings, necklaces, pendants, bracelets and pins.