I think it just depends - if you’re on the higher income end, a few months pay could be a ridiculous amount of money to spend on a piece of jewelry even if you can afford it comfortably.
My personal preference is to keep my engagement ring as my most expensive piece of jewelry, but I know many others who don’t care about their ring as much and have incredible jewelry collections with pricey tennis bracelets, necklaces, earrings. The ring is already enough of a liability from an safety standpoint, I think I’d be anxious with six figure necklaces, earrings, etc