Intricately hand-cut silver setting shows the skill and patience of Nepalese silversmiths. Turquoise » These rings are made with genuine turquoise stones. Turquoise is found above copper mines, and the amount of copper in the stone is what determines how blue or how green the turquoise is; each mine has its own character. Turquoise is widely used in Native American jewelry. It is believed to bring peace of mind, wisdom, and understanding.