Earring Back: Friction Setting: Prong Stone Cut: Pear Stone Millimeter Measurement: 6 Mm Length, 4 Mm Width Metal Color: Yellow Earring Length: 11mm Earring Width: 8.3mm Care: Wipe Clean Stone Type: 2 Lab Created Opal, 24 Lab Created Sapphire Authenticity: Lab Created Stone Birthstone: October Birthstone Earrings Style: Stud Earrings Metal: 14k 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.