Natural stone lapis lazuli pendant. Size: Approximately 21mm*24mm*6mm thick; Metal fittings material: Alloy silver. A 925 silver alloy chain is included as a bonus. The chain is approximately 45cm long and adjustable. Comes with a bag, product number A3782; 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 slow, deep breaths, the blue indigo light will 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!