Features: Quick Ship Jewelry Closure: Lobster Clasp Link Construction: Semisolid Stone Cut: Fancy Stone Millimeter Measurement: 4 Mm Width, 4 Mm Length Metal Color: Yellow Chain Length: 16 1/2 Inch Chain Width: 1 Millimeters Extender Length: 2 Inch Chain Construction: Rolo Care: Wipe Clean Stone Type: 9 Genuine Onyx Authenticity: Genuine Stone Metal: 18k Gold Over Silver Necklace Type: Beaded Necklaces, Pendant Necklaces Pendant & Charms Type: Beads 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.