This is a fascinating topic, and one that I don’t think is unrelated to the proliferation and overexposure of fine jewelry in recent years, most likely due to the rise of super fakes.
Personally, I am glad I waited until my early 30s to really get into fine jewelry and purchases. I started my collection slowly to mark certain milestones in my life (marriage, hitting a milestone net worth, etc). I think had I started purchasing in my 20s, I would have bought a lot of the more daintier versions of products not because of the style, but because of the savings.
As I try to hint strongly to my junior colleagues - every dollar invested in your 20s in index funds go MUCH further than 30s and beyond. Now I am in a much better place to invest in the pieces that truly feel like me.
(Also know myself WAY better now vs in my 20s, but that is another topic altogether.)