The ring is stunning in person. The stone has a brilliant cut to it, so it refracts light at every angle and sparkles brightly. Yes, it will fog up (breath test) and you can see slight hints of rainbow colors within the stone when directly under light (but not bright rainbow like cheap CZ does) - it's not a real diamond, so that will happen to some extent. The stone is almost colorless, perfect for the most part. Under indirect light or outside, it has more of the natural grey/white undertones that a natural diamond would have and looks very real. In the store, I asked the saleswoman to hold this ring up next to a real diamond solitaire ring, moving it around under the light, covering it from the light with my hand, etc. It was impossible to tell the difference between the two with a naked eye - and I was trying hard to find the flaws! It looked exactly like the diamond ring next to it. I love it! I say if you have other priorities at this time, save your money and go with this one.