Jewelry Closure: Spring Ring Clasp Link Construction: Solid Setting: Prong Shape: Emerald Stone Cut: Emerald Stone Millimeter Measurement: 7 Mm Length, 5 Mm Width Metal Color: White Chain Length: 18 Inch Chain Width: .6 Millimeters Pendant Length: 20mm Pendant Width: 5.2mm Chain Construction: Rope Care: Wipe Clean Stone Type: 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.