Included: 1 Necklace Chain(s) Features: Nickel Free, Quick Ship Jewelry Closure: Spring Ring Clasp Link Construction: Solid Setting: Prong Stone Cut: Round Stone Millimeter Measurement: 6 Mm Width Metal Color: Yellow Chain Length: 18 Inch Chain Width: 1 Millimeters Pendant Length: 6mm Pendant Width: 6mm Chain Construction: Link Care: Wipe Clean Stone Type: 1 Lab Created Opal Authenticity: Lab Created Stone Birthstone: October Birthstone Metal: 10k Gold Necklace Type: Pendant 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.