Acrylic Crystal Rings are pretty elegant for her. It will suit her smooth fingers. I will try to look on ebay if I can find an affordable one.
Aside from ebay, I know one place where can I buy cheap and affordable accessories made from swarovski. Yes! I am talking about Baguio City. This is kinda far but if this is the only way right? My cousin bought her swarovski earrings there for a very low price.