This is a gigantic Sterling Silver and Amethyst poison ring. The vintage ring appear to be handmade and the only marks that appear on it are the 925 Sterling mark. The large pear or teardrop portion opens up to reveal a large compartment that measures about 2 cm. The ring is a size a 7.25. The amethyst in the center has a deep purple color that is gorgeous in the sunlight. The compartment snaps tightly shut.