Vintage Navajo Turquoise Graduated Bead Sterling Silver Heishi Necklace. This Heishi Necklace is in Very Good condition as pictured. The beads are very thinly sliced and are graduated from 3 1/2 mm to 10 m in diameter. Sterling Silver Cones at the clasp end of the necklace. Each Cone is marked with a Rising Sun Pictograph with "Sterling" underneath. 24”