Ring Style: Cocktail Rings Setting: Prong Stone Cut: Oval Stone Millimeter Measurement: 8 Mm Width, 10 Mm Length Metal Color: White Ring Gallery Height: 6.4mm Care: Hand Wash Stone Type: 1 Lab Created Opal, 16 Lab Created Sapphire Authenticity: Lab Created Stone Birthstone: October Birthstone 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.