I dabbled in rocks and minerals when I was a youngster, my grandparents and parents were nuts for rocks and since we lived out in the Nevada desert it was a stone paradise! I've got a number of Thunder Eggs and a really cool, five piece set of petrified wood from the same tree. The biggest log is about four feet long and weighs about 150#. Since I like Asian style gardens I've been able to do some very slick layouts in our gardens!