Jewelry Closure: Spring Ring Clasp Link Construction: Solid Setting: Prong Shape: Round Stone Cut: Round Stone Millimeter Measurement: 5 Mm Width, 5 Mm Length Metal Color: White Chain Length: 18 Inch Pendant Length: 19.5mm Pendant Width: 12.6mm Chain Construction: Rope Care: Hand Wash Stone Type: 42 Lab Created Sapphire, 1 Genuine Aquamarine Authenticity: Genuine Stone Birthstone: March 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.