925 Sterling Silver Ring, natural turquoise stone with a blue-green color, with black veins and brown spots within the stone. These markings are called the Matrix, and are common in some types of natural turquoise, giving each stone a unique look. • Material: The ring body is made of silver, with a serrated bezel surrounding the stone, a traditional method for setting stones. • Engravings: The sides of the ring are decorated with openwork and geometric engravings, giving it a heritage and luxurious character. • Shape: The stone is relatively large and oval, one of the most common shapes in men's turquoise rings.