Jewelry Closure: Spring Ring Clasp Setting: Prong Shape: Flower Stone Cut: Marquise Stone Millimeter Measurement: 6 Mm Length, 3 Mm Width Metal Color: White Chain Length: 18 Inch Chain Width: .7 Millimeters Pendant Length: 16.2mm Pendant Width: 16.2mm Chain Construction: Rope Care: Wipe Clean Stone Type: 6 Genuine Amethyst, 2 Lab Created Sapphire Authenticity: Genuine Stone Birthstone: February 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.