Adjustable coral ring by Bernyse Chavez. She is a Navajo artist from the Albuquerque New Mexico, she is known for her unique style. The ring measures 2" in length and is 1/2" wide. Very comfortable and easy to wear. NAVAJO HANDCRAFTED RING WITH BRANCH CORAL Red coral comes from certain areas, such as the Mediterranean, where the specific water temperature and conditions allow coral to thrive. Coral is a hardened tube or branch. Only about 10% of coral is considered jewelry quality. Coral comes in shades from blood-red to orange to pink to white.Native American artists have only used coral for the last 600 years.