Ring Style: Cocktail Rings, Halo Rings Features: Quick Ship Setting: Prong Shape: Oval Stone Cut: Oval Stone Millimeter Measurement: 6 Mm Width, 8 Mm Length Metal Color: White Ring Gallery Height: 7mm Ring Top Length: 14mm Ring Top Width: 13mm Band Width: 2.5mm Care: Wipe Clean Stone Type: 1 Genuine Opal, 4 Genuine Tanzanite Authenticity: Genuine Stone Birthstone: October Birthstone Metal: Sterling Silver Country of Origin: Imported Gemstones may be treated and may require special care. Metal may be rhodium plated to enhance appearance and reduce tarnishing. Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.