An authentic, hand made, Navajo Native American Indian ring. It is made from sterling silver and natural coral. Coral does not come from a mineral; it produces a calcite skeleton similar in texture to ivory and pearls. The size is 8, and it is 5/8" in length. The size can be adjusted from a size 7 1/2 to a size 9. It is stamped sterling and Nakai B. Everything by Grace and Gilo Nakai is cleaned and the copper is removed from the silver to protect and keep it lasting longer. Regular silver can get the gold color but Nakai jewelry never does. They shine each piece with diamond dust to give the shiniest look possible. This item comes with a certificate of authenticity.