Features: Nickel Free, Quick Ship Earring Back: Hinged Setting: Prong Stone Cut: Round Stone Millimeter Measurement: 5 Mm Width, 5 Mm Length Metal Color: White Earring Length: 21.2mm Earring Width: 6.8mm Care: Wipe Clean Stone Type: 6 Genuine Blue Topaz, 4 Genuine Topaz Authenticity: Genuine Stone Birthstone: December Birthstone Earrings Style: Hoop Earrings Metal: Sterling Silver Country of Origin: Imported Gemstones may be treated and may require special care. Metal may be rhodium plated to enhance appearance and reduce tarnishing. Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.