Earring Back: Post Setting: Prong Stone Cut: Oval Stone Millimeter Measurement: 6 Mm Width, 8 Mm Length Metal Color: White Earring Length: 12.4mm Earring Width: 10.3mm Care: Hand Wash Stone Type: 28 Lab Created Sapphire, 2 Lab Created Opal Authenticity: Lab Created Stone Birthstone: October 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.