Want to buy jewlery as a gift for the girlfriend, I know nothing about jewlery, where to start? - eviltoast

I’m thinking maybe a ring or set of earrings. Budget is 50-100 USD. Shipping to Japan or EU, either works (we are in both in the near future).

How should I start? I’m so lost.

If it helps her style is halfway between elegant and hippy (witchy) and she gives off autumn vibes (wears dark greens and maroons a lot, paired with light skin, often wears turtlenecks and dark colours).

I just don’t have a clue what websites to look at, what is considered good or bad etc.