Congratulations! If you need any help while in Antwerp let me know - I work for one of the city's polishing factories. We have smaller ideal-cuts like the ones you mentioned but I will be happy to point you to other reputable diamond houses. +32497904287
Very good discussion. Just wanted to add that IGI and European lab HRD do certify that the diamond is Hearts and Arrows. And from what I've seen, open hearts like seen in the images above don't receive the Hearts and Arrows certification by these labs. Another interesting fact I've come across is that the EightStar, the precursor of H&A, most times will receive Very Good or even Good grade from GIA. Just to clarify that GIA isn't at all into the H&A idea. My two cents..