Jewelry Closure: Spring Ring Clasp Setting: Prong Stone Cut: Cushion Stone Millimeter Measurement: 8 Mm Length, 8 Mm Width Metal Color: White Chain Length: 18 Inch Pendant Length: 24.1mm Pendant Width: 13.7mm Chain Construction: Rope Care: Hand Wash Stone Type: 34 Lab Created Sapphire, 1 Lab Created Emerald Authenticity: Lab Created Stone Birthstone: May Birthstone Metal: Sterling Silver 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. Photos are enlarged to show detail.