User blog comment:Death'sapprentice77/The Witch King Vs. Algol (God Match?)/@comment-422690-20100919020314/@comment-181289-20100919022900

They can be but they are exceptionally hard to do so. There are many rings forced the 19 given to the leader of Men, Dwarves and Elves were exceptionally powerful. I'm not certian how but only a few rings were ever actully destroyed, and they was by dragons fire. Even though there not the One ring they are still extremly hard to destroy. Even Gandalf questioned his ability to beat the witch king, and he was a divine being. Algol can be beaten by normal humans with normal weapons, the Witch-king can't.