Features: Quick Ship Jewelry Closure: Spring Ring Clasp Link Construction: Solid Setting: Prong Stone Cut: Round Metal Color: White Chain Length: 18 Inch Chain Gauge: 030 Chain Construction: Cable Care: Wipe Clean Stone Type: 6 Lab Created Sapphire, 5 Lab Created Opal Authenticity: Lab Created Stone Birthstone: October Birthstone Metal: Sterling Silver Necklace Type: Pendant Necklaces, Tennis Necklaces Country of Origin: Imported 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.