Based on the experts general experience with these diamonds does an Asscher/Square Emerald cut of 1.5-2ct and SL1 clarity generally show eye-visible inclusions? (assuming GIA grading report) If so, should a VS grading be a must have for these cuts?
I'm sorry to say that yes, most probably such s astone would have eye visible inclusions. On a 2ct you can be safe with a VS 1 or a VS 2 woth an inclusion on the side, NOT right in the middle of the table.