Jewelry Closure: Spring Ring Clasp Link Construction: Solid Setting: Prong Shape: Triangle Stone Cut: Trillion Stone Millimeter Measurement: 6 Mm Length, 6 Mm Width Metal Color: White Chain Length: 18 Inch Chain Width: .6 Millimeters Pendant Length: 19.2mm Pendant Width: 7.8mm 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.