Earring Back: Friction Setting: Prong Stone Cut: Oval Stone Millimeter Measurement: 4 Mm Width, 6 Mm Length Metal Color: White Earring Length: 12.8mm Earring Width: 6.4mm Care: Wipe Clean Stone Type: 28 Lab Created Sapphire, 2 Genuine Topaz Authenticity: Genuine Stone Birthstone: December Birthstone Earrings Style: Stud 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. Photos are enlarged to show detail.