Maurice Duvalet Maurice Duvalet was a designer of French origin who designed jewelry for large houses as Van Cleef & Arpels and Rubel. He was famous for his ballerina brooches. Maker’s Marks and Timeline: Duvalet, Maurice Country France Category: Uncategorized Tag: Need Additional Information Description Specialties French born designer. Worked in conjunction with Van Cleef & Arpels. Ballerina brooches.