2.50 carat total weight Gemstone. London Blue Topaz: 1 piece, Radiant Cut 9x7 mm.Ring has a top dimension of 3/8 x 3/4 inches and weighs 3.66 grams. Gemstone has a nice color and good clarity. Retails for over $99.99.Ring features top quality workmanship and a beautiful White Gold finish. Ring is in pure Sterling Silver and stamped .925 Brand: Oravo Design: Gemstone Style: Promise Resizable: No Adjustable: No Size/Dimensions: 7 Metal Stamp: .925 Sterling Silver Gem Weight: 2.5