Features: Quick Ship Jewelry Closure: Box Clasp Setting: Prong Stone Cut: Marquise Metal Color: Yellow Chain Width: 5 Millimeters Stone Treatment: Color Enhanced Care: Wipe Clean Stone Type: 88 Genuine Blue Topaz Authenticity: Genuine Stone Birthstone: December Birthstone Metal: 18k Gold Over Silver Necklace Type: Tennis 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.