Metal ring made of 925 MM silver. Size S = Circumference 2.2 inches (56.9 mm) // Diameter: 0.7 inches (18.1 mm) Size M: Circumference 2.4 inches (61 mm) // Diameter: 0.76 inches (19.4 mm) Size L: Circumference 2.5 inches (63 mm) // Diameter: 0.78 inches (20 mm) Special collection made in Italy. The process starts with a design made in 3D, which will take the form of jewelry through resin molds that will serve as containers for the alloy made of pure silver granules (999) fused with other metals, no less than 925, during the casting process.