Check with your partner and see what kind of ring they want for their engagement.
I went to the jewelry store with my partner and shopped for her engagement ring. Ended up doing a custom piece with a rose-gold band and a couple of blue topaz gems. She wanted a ring that would fit comfortably under exam gloves (she worked in a lab at the time). She's much happier with it than a big heavy pointy rock, and it was way cheaper (like 450 for the whole ring).