My all time fav would have to be a rhodalite garnet cluster * ring. Looks like a big mum on my finger and the stones are lovely. I bought it full price for $80, but LOVED it so much, that when I saw TWO going to auction, I snatched them up for random presents for a mere $30!!!
Gave one to my ex mother in law (she's a simple lady who works hard in life and never buys anything for herself), she cried her eyes out and keeps it in her purse to wear driving home from work each day, lol!
The other I sent as a surprise mystery gift to give to a friend's mom for Christmas.
I also REALLY love the color change large stone flourite rings. Flourite is a beautiful stone, and so hard to find anywhere else. Also auction buy at about $45 (normally $99+). If you don't have one, get one. They hit the auction site frequently. While not advvised for rings, it is so clear and refractive it's hard NOT to want it in a ring form. And yes it does change color depending on the light
***get the biggest one you can!