These earrings are sterling silver and handmade by a Navajo artists. Each piece of jewelry is handcrafted and signed by Native-American artist and all pieces are made from sterling silver and high-grade natural stones. The stones used in these earrings are turquoise, lapis, malachite, denim lapis, red & orange oyster shell. The earrings are 3/4 of an inch length and width. The earring comes with a certificate of authenticity with any purchase.