My dh and I have been discussing upgrading my 1/2 carat solitaire. I purchased a 1 carat cz to get an idea of how it would fit in my solitaire wrap. I don't have anything against simulants, especially with the controversy surrounding diamonds, however there is something off with the cz. It sparkles, its a nice color but if I turn my hand a certain way, it looks glassy. I do think it looks better than diamonds of poor clarity but not as good as a nice clarity real deal.
Thats a great idea. You can get a feel of the size difference and make sure you are comfortable with it.