This is a bit late, but yes, the stone, setting and enhancer were picked separately to put this together. I did not expect the final look to turn out like this, but the oval stone seemed to fit my short fingers the best, and the enhancer is a unique touch that I stumbled upon.
I had a cheap Walmart ring with the infinity symbol and he noticed how much I wore it. He found an engagement ring that incorporated the infinity symbol and it was so perfect for me. I also told him that I wanted one that was low-key and not too dramatic so he did really well!