Gemstone: Genuine London Blue Topaz, 1 piece, Heart Shape, Checkerboard Cut, 9.00mm. Gemstone has a vibrant rich color and eye clean clarity. Pendant is in Sterling Silver with .925 stamp and measures 3/4 x 3/8 inches and weighs 1.80 grams. Pendant features top quality workmanship and a beautiful finish. Includes Free 18 inch Sterling Silver Box Style Chain, Free Ribbon Gift Box and .