A Massive pair of Sterling Silver earrings from renowned Jewelry Designer. Clip-on Large Oval circle Earrings, with 3 large Black Stone dangling off each earring. They are hallmarked and hand Written on the back. Frederic Duclos is an award-winning French designer of contemporary sterling and 14 karat jewelry and gifts. The Company was created under the guidance of Karen and Frederic Duclos in 1984. This piece was made using the electroform technique by California designer/maker Frederic Jean Duclos. This technique involves using an electrical current to deposit metal into a mold over a form made of wax. Although this technique was invented in 1838, it is not extremely common in modern jewelry.