Earring Back: Friction Setting: Prong Stone Cut: Cushion Stone Millimeter Measurement: 7 Mm Length, 5 Mm Width Metal Color: White Earring Length: 10.3mm Earring Width: 8.4mm Care: Wipe Clean Stone Type: 2 Lab Created Opal, 32 Lab Created Sapphire Authenticity: Lab Created Stone Birthstone: October Birthstone Earrings Type: Post Earrings Metal: Sterling Silver Earrings Style: Stud Earrings, Halo Earrings 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.