Diamond ring

I have been planning to propose to my beloved for a long time now. I plan to take a ring with a large round diamond for such a celebration. As for me, then n bad option found on the link http://pierrejewellery.com/katalog/halo-round-diamond-ring-in-18k-yellow-gold Do you think such a purchase will be appreciated or small stone?

I think that nobody needs such gifts at all. The main thing is that there would be feelings, not what stone will be on the ring. But this is my opinion, and make your own decision.