The cut of the stone you will find only at the source, same for the setting. BUT, there are other cuts which come close and settings too. For the stone, take a look at the Queen of Harts (picture at GoodoldGold, but I guess you can buy them fromelsewhere if you so wish, GOG is a distributor) and Lucere (can't remember which was blessed with the resenblenace). For the setting... Vatche does not come as close as others. Hopefully I will remmeber what was the closest I saw, but it could be at Icestore (almost sure).
EDITED TO ADD: It was the Lucere. There are two types of this brabded cut, European and US. They are very simmilar, but only the Europeann type is cut as rectangles, the US type are only squares. I guess the European type also has 20 (maybe 18? or so) facets more, which should probably be overlooked. Lucida are both square and rectangulars, right?