All the blue your seeing is going to be dark, a little is fine because it adds contrast but this one is predominately blue. Ideally you would like to see lots of red, some green and a little blue and little to no white. Emerald cuts are difficult, but I'd pass on this one. You can look at the 3.2ct EC offered by the same vendor and compare that aset to yours and see the difference.
you can read more about interrupting the aset here...