Features: Nickel Free, Quick Ship Jewelry Closure: Spring Ring Clasp Link Construction: Solid Setting: Prong Stone Cut: Princess Stone Millimeter Measurement: 6 Mm Length, 6 Mm Width Metal Color: White Chain Length: 18 Inch Chain Width: 1.15 Millimeters Pendant Length: 7mm Pendant Width: 7mm Chain Construction: Link Care: Wipe Clean Stone Type: 1 Lab Created Ruby Authenticity: Lead Glass-Filled Ruby Birthstone: July Birthstone Metal: Sterling Silver Necklace Type: Pendant Necklaces Country of Origin: Imported Lead glass-filled rubies require special care. Avoid ultrasonic cleaners, extreme heat and household chemicals and detergents to preserve the life of your stone. Wear with care and clean with warm, soapy water to maintain the beauty of the stone. 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.