Good quality. Looks a little off-center, but that may just be b/c the photo isn''t exactly directly head-on (i.e., it may be sitting in the tray a little off center).
All IS images / round diamonds show some leakage where you''re seeing white (pink, really, which is even less leakage); you just want to make sure its in the right places, and especially not under the table. This looks like a good stone.
That stone will look better with the whites than without, giving an overall beautiful distribution of contrast with the blacks for its super brightness to zing against. Amongst the best I've seen.
To not have the leakage around the outside of this stone we must give up contrast. Diamonds like 8* and ACA new line brand do this at the expense of a pecieved brightness by some observers