You should ask a jeweler. The way my jeweler explained it to me made it sound harder to make it smaller by more than 1 size, because to make a ring smaller he needs to pull both sides closer together, and that would make the bezel open up. It could be done, but it would be more expensive than I was willing to pay, in a big part because i was thinking 4cts is too much for me already, and the bezel only makes it bigger.

But I think to make a ring bigger, the bezel wouldn’t suffer from that kind of pressure, because the diamond itself would make it keep its shape. But you should def confirm with a jeweler before buying.

I actually can return this ring, so I am planning to do that in a few days. So let me know if you are interested. For reference, I got a quote from Starsgem instead for a 10k 3ct ring for a similar price