18kwg 18.5mm Wide Baguette Diamond Ring. There are a total of 90 diamonds at 1.57 carats and the baguette diamond count comes to 35 pieces at 1.09 carats. This band has a ring size of 7.5 and weighs a total of 9 grams. The front band is 19mm wide and back of the band measures 3.5mm wide. You get free appraisal with the retail value $11,000, which will state the weight and diamond quality of each piece.