At 27, I don't think you should get any of the RTT or heart stuff... it's too young. I am 24 and I wouldn't even consider wearing any of that stuff.
That being said, I really like all of the Elsa Peretti stuff, the teardrop necklace in crystal is my favorite.
That being said, I really like all of the Elsa Peretti stuff, the teardrop necklace in crystal is my favorite.