Jewelry Closure: Spring Ring Clasp Setting: Prong Shape: Oval Stone Cut: Oval Stone Millimeter Measurement: 9 Mm Length, 7 Mm Width Metal Color: White Chain Length: 18 Inch Pendant Length: 21mm Pendant Width: 10mm Chain Construction: Box Care: Wipe Clean Stone Type: 1 Genuine Blue Topaz, 22 Lab Created Sapphire Authenticity: Genuine Stone Birthstone: December Birthstone Metal: Sterling Silver Necklace Type: Halo Necklaces, Pendant Necklaces Pendant & Charms Type: Pendants Country of Origin: Imported Gemstones may be treated and may require special care. Metal may be rhodium plated to enhance appearance and reduce tarnishing. Set with zirconia from Swarovski Photos are enlarged to show detail.