So what do you do if he proposes with an absolutely horrid ring?

This isn’t anything too serious although I would prefer people who have been engaged and/or married to answer.

My boyfriend and I have been talking about marriage and I know for a fact he has been looking at rings. When I saw a few of the ones he was looking at on his computer (he let me use his laptop and his tabs were still there so no I wasn’t snooping) some of them were pretty ugly. Lol I trust his judgement for the most part so I’m confident he’ll get something I like when the time actually comes, but I was just wondering if anyone has any stories about this? Like did you or someone you know propose with a really ugly ring? Do you happily keep it and move on or did it eventually get changed? This is more curiosity than anything else. I know it’s love and all and the person should be happy they’re getting married, but still I know some men have awful taste in jewelry lol