I can certainly understand someone using a CZ as a "placeholder" for a diamond engagement ring. Some designers do use CZ's in their jewelry. I, personally, would not choose to use CZ in my wedding rings. What is puzzling, to me, is that some posters say they would choose a CZ instead of a diamond, because they like it better. I don't really understand that. CZ's are diamond simulants. I didn't make that up, it's just the way they are classified. I'm not sure why that upsets people. There are simulated sapphires and emeralds, too. You can find excellent gems, at a reasonable cost, with some guidance and education.