Cartier Double C Decor Ring

Given that the prices on Cartier's jewelery keep going up, better buy now! I have my eye on the Double C Decor Ring. It's made from 18K gold and diamonds and retails for $3,400. I'm thinking about getting it as a much-delayed 25th birthday present, but I keep wavering on whether it looks too much like an engagement ring. It comes in a variety of iterations, but I keep going back to this one. I've had my eye on it forever! It's a classic that will only go up in value and I love the original shape.

What do you think about Cartier's Double C Decor Ring?