Jewelry Closure: Spring Ring Clasp Link Construction: Solid Setting: Prong Shape: Heart Stone Cut: Heart Stone Millimeter Measurement: 6 Mm Width, 1 Mm Length Metal Color: White Chain Length: 18 Inch Chain Width: .6 Millimeters Pendant Length: 26.9mm Pendant Width: 20.5mm Chain Construction: Rope Care: Wipe Clean Stone Type: 32 Lab Created Sapphire, 1 Genuine Amethyst 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.