This is a 10K white gold ring with twelve (12) channel set small diamonds. The band width at the top (where the channel is) is approximately 3mm. I do not know the total diamond carat weight but each diamond is approximately 1 to 1.5mm. I do not know the carat weight or the cut, color, or clarity characteristics of the individual diamonds. I received this as a gift many years ago and I do know it was purchased from a chain retail jeweler (most likely Kay Jewelers). The inside diameter is approximately 17.49mm, making this a size 7.25. There is minor wear on the underside of the band, mostly tiny scratches from normal wear. Relishing due to size for me