Men, if you're going to pop the question during the holidays, take a close look at Beyoncé. No, not there. Gentlemen, take a look at her finger. The flawless, 18-carat, emerald cut, $5 million rock that Jay-Z put around Beyoncé's digit back in 2008 still stands out as one of the most envy-inducing sparklers in celeb engagement ring history. We like Jen's new ring, too. But that Lorraine Schwartz design says Jay-Z liked it, and, boy, did he put a ring on it.