Here is an 10K yellow gold Edwardian pin. In the center is a round bezel set onyx with a prong set faux ruby in the center. On either side is a rice pearl. It has a lever safety catch which is stamped 10K with something else that I cannot make out. It measures 1 3/8" X 1/2". Weight is 1.44 grams. Everything is perfect except the faux ruby which has a tiny chip.
Edwardian 10K Gold Pin With Onyx Pearls and Faux Ruby