Signed Navajo Turquoise with Copper Inclusions Ring Fredrick Chavez Sterling Silver
Navajo sterling silver ring made by Fredrick Chavez. Hallmarked inside. Set with a very special turquoise stone.
Size: 7 Face measures 7/8" long. Weight: 6 grams. Marked sterling.
This nice blue turquoise stone has a copper inclusion. Turquoise is often an off-shoot of copper mines and it is copper that is responsible for the color of turquoise. Think about verdigris on on an old copper pipe. The turquoise occurs when water seeps down into rock that contains copper. It forms in veins and over ions of years it turn hardened rock turquoise. Other metal and minerals can change the color. Green turquoise has iron present.