925 Sterling Silver Earrings. Navajo made sterling silver earrings with a triangular design inlaid with purple and orange Spiny Oyster, as well as blue and green Turquoise. These earrings measure approximately 3/8th of an inch wide by 5/8th of an inch tall not including the ear wire. Navajo made and produced through First American Trading. Stamped "FAT .925"