Purple Oyster Shell Sterling Silver Native American Post Stud Earrings AX128170MATERIALS: Sterling silver and real Purple Oyster Shell. MEASUREMENTS: Post earrings measure approximately 3 8" long and 3 8" at widest point. DESCRIPTION: This pair of earrings is a Navajo classic! This piece of Native American jewelry is Navajo hand crafted by artist Verley Betone, out of genuine sterling silver and real Purple Oyster Shells. The earrings have a total of TWO shells (ONE in each earring) that are delicately placed in hand cut bezel