Theodore Plate & Co is a second generation family owned and operated full service jewelry store. They specialize in fine jewelry and watch sales and on premise repairs. Providing their customers with custom design jewelry is a trademark of Plate Jewelers. They also have an on site (GIA) Graduate Gemologist who provides expert insurance and estate appraisals. Another service that Plate Jewelers provides is paying cash for customers old gold, platinum, silver and diamonds. Plate Jewelers is one of the oldest Jewelry stores in the state of New Jersey. They have been in business in Hackettstown, NJ since 1857.