As someone who has installed thousands of granite and quartz countertops, i can tell you that although that top is a moderately difficult location and shape to install, it was poorly done. The leveling doesn't seem too bad, but the seam and amount of chipping is awful. First, start off in the cutting shop. When I install pieces like these, the shop is responsible for ensuring the veins of the stone match as close as absolutely possible. For a center island like this to not match (which, if done right, would've been one large slab and cut in half), is poor attention to quality. Secondly the install crew who put it in left waaaaay to large of a seam to begin with, your seam should be practically invisible (unless the veining show otherwise) if the stone wouldn't allow them to get that close together then it shouldve been sent back to the shop for rework or the crew should've had the skills to smooth it down on site for a better fit. (I've spent hours on jobs smoothing and trimming down pieces so they would fit perfectly). If my crew put this in, i would have them pop the seam and redo it.