I can't tell very well by the picture, but the fabricator should have certainly placed the seam in a better spot. marbles come in the standard of 3/4" but many times can also be found in 1'1/4" The fabricator should have planned better and made the proper decision of which thickness was best to you with your case. The addition to thickness is granite is called "build up" it is very common that people like to have build up but the skill is not easy to master. Try not to do things in your home that aren't already shown in the showroom of whichever fabricator you have chosen, this fabricator from what you explained seems not to be very experienced with edging and build up. You do have the option of re-edging but, the thickness of your granite will obviously be the same and you would have to pick a different edge so the seam can be in the groove instead of on the curve of the bullnose. It depends on your preference whether you want to change the shape of the edge all together or not. You picked a great marble though, it looks beautiful. I hope this helped let me know if you have any other questions

K&V Master Marble and Granite
218 Route 109
Farmindgale, NY 11735
516.752.0800
516.752.8325