Black Spinel stones glitter in their sterling silver setting. (925 China marked next to the clasp). The flexible bracelet is 8" around when closed and 1/8" wide. The opening adds 1 1/2 inches for easy slip on. Black spinel is a gemstone made of magnesium oxide. It is favored by jewelry designers such as Harry Winston, Dior and Chanel who combine it with other precious stones. In excellent condition. (The blue and white dots in the photos are reflections.)