Material: 925 Silver Plated; Size: Approx . 15mm(Diameter) x2mm(W), inner diameter is 10mm; Stone: Top Quality Cubic Zirconia [Shipping]: Item will be shipped within 1 business day after payment clears. Free US Standard Shipping with The Tracking Number. [Care for Plated Jewelry] To avoid tarnish, limit exposure to water, perfume, Chemical or body cream etc. Please keep it in a plastic bag while storing it. Do not use silver or jewelry liquid cleaner, wipe with a jewelry cloth .