Features: Nickel Free, Quick Ship Circumference: 7 1/4 Inch Jewelry Closure: Box Clasp Link Construction: Solid Setting: Prong Stone Cut: Cushion Stone Millimeter Measurement: 4 Mm Width Metal Color: White Chain Length: 7 1/4 Inch Chain Width: 4 Millimeters Care: Hand Wash Stone Type: 1 Lab Created Opal Authenticity: Lab Created Stone Birthstone: October Birthstone Bracelet Type: Tennis Bracelets Metal: Sterling Silver Is Beaded: No Country of Origin: Imported Gemstones may be treated and may require special care. Metal may be rhodium plated to enhance appearance and reduce tarnishing. Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.