Diamond Clarity: I2-I3 Jewelry Closure: Spring Ring Clasp Link Construction: Solid Setting: Prong Shape: Rectangle Stone Cut: Heart Stone Millimeter Measurement: 6 Mm Width, 6 Mm Length Diamond Color: H-I Metal Color: Two Tone Chain Length: 18 Inch Chain Width: .6 Millimeters Pendant Length: 30mm Pendant Width: 14.2mm Rounded Carat Weight: Less Than 1/10 Ct.t.w Chain Construction: Rope Care: Wipe Clean Stone Type: 1 Genuine Onyx, 2 Natural Diamond Authenticity: Genuine Stone Metal: 10k Gold, Sterling Silver 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.