Jewelry Closure: Spring Ring Clasp Setting: Prong Stone Cut: Oval Stone Millimeter Measurement: 6 Mm Width, 8 Mm Length Metal Color: White Chain Length: 18 Inch Pendant Length: 20mm Pendant Width: 12.5mm Chain Construction: Box Care: Wipe Clean Authenticity: Lab Created Stone Birthstone: September 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.