Get an exclusive range of Hand Made Agate Stone Knife from Natural Agate. In general, agate values are quite modest. Their prices reflect mainly labor and artistry rather than the value of the material itself. Agates of large size or with particularly distinctive, fine, or landscape-like color patterns are at a premium. A wonderful crystal that helps in our stomach, uterus, intestines, eyes and a lot of other problems. This includes the healing of skin diseases such as common insect bites.