Features: Quick Ship Jewelry Closure: Spring Ring Clasp Link Construction: Hollow Setting: Prong Stone Cut: Pear Stone Millimeter Measurement: 8 Mm Length Metal Color: White Chain Length: 18 Inch Pendant Length: 40mm Pendant Width: 8mm Chain Construction: Cable Care: Wipe Clean Stone Type: 12 Lab Created Sapphire, 4 Lab Created Emerald Authenticity: Lab Created Stone Birthstone: May Birthstone Metal: Sterling Silver Necklace Type: Y Necklaces 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.