Features: Adjustable Chain Jewelry Closure: Spring Ring Clasp Setting: Prong Shape: Snowflake Stone Cut: Round Stone Millimeter Measurement: 4 Mm Length Metal Color: White Chain Length: 16 Inch Extender Length: 2 Inch Pendant Length: 23mm Pendant Width: 20mm Chain Construction: Rope Care: Wipe Clean Stone Type: 72 Lab Created Sapphire, 1 Genuine Blue Topaz Authenticity: Genuine Stone Birthstone: December Birthstone Metal: Sterling Silver Necklace Type: 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. Photos are enlarged to show detail. Set with genuine gemstones from Swarovski