Spiny Oyster, Copper Turquoise Gemstone 925 Silver Plated Handmade Dangle Earrings 2.2" This unique and beautiful gemstone combines copper turquoise with a spiny oyster's shell. This enhances the gem's aesthetic appeal, thus making it desirable for creating copper turquoise oyster jewelry. The spiny oyster gemstone has a colorful shell, and as the name implies, it is covered with menacing spines. The spiny oyster shells are rare and are especially treasured by Native American Indian artists. Spiny oyster shells help to bring about a sense of strength and survival, especially for those in domestic abuse or traumatic situations. Turquoise is one of the world's oldest gemstones and has been used in jewelry for thousands of years. Old Europeans credited turquoise with helping achieve a higher state of consciousness.