Earring Back: Lever Back Setting: Prong Stone Cut: Oval Stone Millimeter Measurement: 6 Mm Width Metal Color: Yellow Earring Length: 27mm Earring Width: 4.5mm Care: Wipe Clean Stone Type: 2 Lab Created Opal, 60 Lab Created Sapphire Authenticity: Lab Created Stone Birthstone: October Birthstone Earrings Style: Drop Earrings Metal: 10k Gold Over 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.