I concur with the majority opinion here. Actually, I bought my own rings (lordy, I had so many warning signs that I ignored!!!) but I'm saving them for D14 to do what she wants.
Unless they were family heirlooms, they were a gift. I see where you're coming from, but it's likely that she won't.
you could also ask your ex-step-FIL for his opinion--I'm sure he'll give you one!
M60 H52 D20 M14 yrs OW-old gf from 1986 bomb-5/18/08 H filed for D-9/10/08 D final 4/24/09 xH remarried (not OW) 2012