Jewelry Closure: Spring Ring Clasp Link Construction: Solid Setting: Prong Shape: Heart Stone Cut: Heart Stone Millimeter Measurement: 7 Mm Length, 7 Mm Width Metal Color: White Chain Length: 18 Inch Chain Width: .6 Millimeters Pendant Length: 18mm Pendant Width: 10.5mm Chain Construction: Rope Care: Wipe Clean Stone Type: 20 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. Diamond total weights may vary between .01 and .08 carat. Metal may be rhodium plated to enhance appearance and reduce tarnishing. Photos are enlarged to show detail.