Is she going to wear it with either one of the rings she already has? If yes, then you could try to think which kind of a new ring would match best with that ring. If you ask her opinion, you could try to do it at least some weeks before the b-day (in a casual manner, not "do you want this or t...

Basically, it's just a piece of aluminum foil in warm water and a tbs or so of salt. The salt acts as an electrolyte for the redox reaction. The items are simply soaked in the solution until they seem to be clean.

Have you used this method, has it worked and what do you think about it?

^ Maybe it's because someone didn't like his or her birthstone and decided to use some other stone instead? It could also be linked to the availability of different stones: On some areas all stones weren't available and people had to settle for what they had, and later people learned about those var...

That would be perfect without the yellow gold part and with a blue stone, or maybe green or other shade of red. I can't even imagine wearing that, though, too big for everyday work. For really important occasions, maybe.

My mother had an engagement ring made of birch bark. They're actually quite easy to make, at least the most simple patterns. That is to say, it doesn't always has to be metal.