Circumference: 7 1/4 Inch Diamond Clarity: I3 Jewelry Closure: Lobster Clasp Link Construction: Solid Setting: Prong Stone Cut: Oval Stone Millimeter Measurement: 6 Mm Length, 4 Mm Width Diamond Color: H-I Metal Color: White Chain Length: 7 1/4 Inch Chain Width: 4.6 Millimeters Rounded Carat Weight: 1/6 Ct. T.w. Care: Wipe Clean Stone Type: 27 Natural Diamond, 9 Genuine Opal Authenticity: Genuine Stone Birthstone: October Birthstone Metal: Sterling Silver Country of Origin: Imported Gemstones may be treated and may require special care. Diamond total weights may vary between .01 and .08 carat. Metal may be rhodium plated to enhance appearance and reduce tarnishing. Photos are enlarged to show detail.