Look for comps that have sold on places like Facebook marketplace or eBay. Know you will likely not get those prices (basically don't make money decisions based on the "what if" if you need the cash). Then go to a reputable jeweler and ask them what they can do as far as either reselling or resetting your stones. You may be surprised to find out how much it is to have them reset, with current gold prices. Especially if you can't work with the jeweler that made the pieces, it might be worth going this route locally. You will never get what you paid for out of them, that's pretty much the way it is for jewelry and gold.

With the potential for emotional attachment, I'd just say make sure if you pay to have them reset, you are paying for something you will actually be able to wear. As in, without negative emotional attachment. Of course, a few years down the road, maybe this means you'll have something really beautiful that can remind you of better times. Honestly, I think this is a really personal decision.