Unworn since purchased 2-3 years ago, and stored at home. These earrings can be used without backings. - Won't come off easily. Comfortable to wear. - Hypoallergenic - Rust-resistant Hoop section: 925 silver with 18K yellow gold plating Stone: Cubic Zirconia Post section: Surgical stainless steel Hoop diameter: Inner diameter 11.0mm, Outer diameter 15.0mm Weight (per side): Approximately 1.7g Retail price: ¥29,150 Thank you for looking.