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. Some diamonds may consist of fewer than 17 facets. Photos are enlarged to show detail.