QUOTE(LikesThemAll @ Jun 1 2006, 06:32 AM)
would a nice pair of earrings be a good present for a lady friend's birthday when we know each other for less than one year? thinking either pearl for her birthstone or diamond.
I would say get her really, really large hoops... big enough to hold her feet.

Seriously, though. Unless earings have come up in normal conversation, like... wow, I wish I had a nice pair of earing to go with this necklace... or something similar then I would say earings, or any jewelry for that matter, is not a good gift.
This is her her first birthday that you're celebrating together. Think of it as an opportunity to dazzle her and make her feel special and appreciated. Guys who have no imagination or want to impress girls with money buy jewelry. I would say get her something THOUGHTFUL relating to a hobby, something fun you two really enjoy doing together, or something you both have talked about enjoying but haven't had the opportunity to do together yet.
Does that make sense??? I hope so, cuz I usually only like posting ridicule or boob talk. If you still have no clue, try including in your response what this girl likes so people here can help you come up with ideas
If all else fails, post a picture of her naked, so we can see what kind of earings would look best on her.