Includes: A matching box. Style: Modern Material: 925 sterling silver, Platinum-plated, Opal, Zircon (accent stones) Care: Avoid wearing it during exercise, as sweat will react with the jewelry to produce silver chloride and copper sulfide, which causes the jewelry to deteriorate and corrode over time. Ships from Overseas Gemstone origin: Australia Product measurements: 5: Circumference 2 in 6: Circumference 2.1 in 7: Circumference 2.2 in 8: Circumference 2.3 in 9: Circumference 2.4 in 10: Circu Sterling Silver Halo Ring, Silver Halo Ring, Australian Opal, Halo Ring, Girls Jewelry, Natural Opal, Halo Rings, Blue Rings, Opal Rings