Specializing in one of a kind custom diamond engagement rings and jewelry. Gregg Helfer, Ltd. is a full service private jeweler located in Chicago's famous Jeweler's Row since 1933. Whether you are shopping for diamond stud earrings, tennis bracelets, pendants or any fine diamond jewelry, we offer private no pressure consultations and offer the finest quality jewelry and GIA certified diamonds...all this at more than competitive pricing. Whether your needs are simple or you prefer our custom design services, we have something that fits every budget.