A lovely raw peruvian opal sits in it unique and one of a kind 18K yellow gold setting. Peruvian blue opal is relatively rare and is only found in the Andes mountains near San Patricio, Peru. It is a translucent stone with color similar to the Caribbean Sea. Peruvian Opal is reported to be a stone of tranquility and aides in quieting the mind and promoting restful sleep.  This is a one of a kind ring.