The Robert De Mario design firm dates from 1945 through 1965. Located in new York City. This is a gorgeous necklace with a early mark. The gold toned necklace is set with tiny garnet rhinestones and measures to 17 inches. Garnet is the January gem stone. De Mario was known for his attention to detail and excellent craftmenship.At one time he and Stanley Hagler were in negotiations to combine studios but that never came to pass. This is a gorgeous necklace with what I think is a Regal European style...Sophisticated styling in vintage condition no stones missing but some wear to the metal. priced accordingly. Authenticity is guaranteed of full refund. I endeavor to keep my prices affordable but will entertain fair offers.