Circumference: 7 1/4 Inch Jewelry Closure: Box Clasp Setting: Prong Shape: Emerald Stone Cut: Emerald Stone Millimeter Measurement: 4 Mm Width, 6 Mm Length Metal Color: Two Tone Pendant Length: 6.8mm Care: Wipe Clean Stone Type: 40 Genuine Onyx, 41 Lab Created Sapphire Authenticity: Genuine Stone Bracelet Type: Tennis Bracelets Metal: Sterling Silver, 10k Gold 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.