Natural stone lapis lazuli ring size: approximately 14mm*19mm*6mm thick; Ring size: Adjustable free size. Metal material: Alloy silver. With a bag, product number A4891; Lapis lazuli is a rare gemstone, and ancient artifacts of blue lapis lazuli are often precious. Lapis lazuli is so popular because it is one of the seven treasures of Buddhism. If you overuse your eyes, lapis lazuli can relieve eye strain and fatigue. By closing your eyes and lying down, placing the blue lapis lazuli on your eyes, and taking long, deep breaths, the blue indigo light can penetrate the eyeballs, reducing eye fatigue and protecting your eyesight. ■The color of the photo may differ slightly from the actual product depending on the shooting environment. Instant purchase OK. Thank you!