Photo of collier met zwaan - Public domain dedication

His mature work belongs to the Art Nouveau style, while in his later years his work aligned with Art Deco. As a jewel designer, he was less prolific than his French contemporary René Lalique. Nevertheless his "exemplaire unique" series of jewelry is among the finest jewelry created in Art Nouveau. Wolfers is also known for his sculptures, decorative objects and tableware executed in precious materials such as silver, bronze, ivory and marble. He also designed vases and objects in glass and faience.