I love my Diamonique studs from QVC, they are a true wardrobe staple. I can not imagine spending the money on diamonds when I have a beautiful substitute that shines and sparkles even better than the real thing. Plus, my studs are 2 carat size (4 carat total weight), which would cost a fortune in a real stone.
OP- these are the perfect size- large enough to be noticed, but not too large and fake looking.
I have Diamonique studs and I really, really like them. May be my favorite earrings next to my pearl ones. I've had them for about 10 years now and they still look great.
I don't know whether QVC still makes this warranty, but all their Diamonique CZ jewelry used to come with a lifetime warranty in that if the stones clouded, as CZ often does, they promised to replace it for free.
About 7-8 years ago I contacted them because I had a DZ ring with a stone that looked cloudy. The ring was about 10 years old at the time. Since I no longer had the receipt their customer service offered to search through the old microfilms of their order database to find my original order info so they could replace the stone. I ultimately decided not to put them through the trouble as closer inspection of the ring showed lots of scuffing on the stone which is what was making it look cloudy. But I thought that was awful nice of them.
Other than that battered ring I've never had any trouble with QVC CZ clouding.