The Crystal Cave ring is probably my favorite looks-expensive-as-all-heck-but-isn’t ring I’ve seen in a while. It’s sparkly, purple, and HUGE. It’s only $20 and I think I’m in love.
The only downside is that you’ll have to wait a bit to get your hands on it (to get it on your hands? Ring humor, work with me guys.) - it’s currently on pre-order and doesn’t ship until 3/26.