Jewelry Closure: Spring Ring Clasp Link Construction: Solid Setting: Prong Stone Cut: Oval Stone Millimeter Measurement: 3 Mm Width Metal Color: Rose Chain Length: 18 Inch Pendant Length: 20.3mm Pendant Width: 10.7mm Rounded Carat Weight: Less Than 1/10 Ct. Chain Construction: Rope Care: Hand Wash Stone Type: 13 Natural Diamond, 1 Genuine Opal Authenticity: Genuine Stone Birthstone: October Birthstone Metal: 10k Rose Gold Necklace Type: Pendant Necklaces 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.