Very small diamond ring or white sapphire?

So my price range is low for a ring. Would you rather have very small diamond ring (literally under $400) or a white sapphire ring that’s a decent size like 1ct? I originally had Moissanite but no jeweler what’s so ever will touch it because it’s “Moissanite” so getting a new ring so I don’t come into this issue again and with a warranty!