Striking, Mid-Century, Modernist earrings for pierced ears. The top section is sterling silver, accented with a black onyx cabochon. The bottom section, which swings freely, is a colorful slab of brecciated jasper. Marked: "GFMW" for Great Falls Metalworks, and "STERLING". Each earring measures 2 inches by 3/4 inch. Excellent condition.