I do know and realize that the newer ceramic sharpening stones are superior in many ways to some of the older/traditional whetstones provided by Mother Nature herself. I have a Novaculite (Arkansas Stone) which is a super high grade that I've been told was mined completely out many years ago. I do like the stone for final finishing on already sharp blades. Novaculite had many uses other than it's great whetstone uses.
There are other natural stones that GOD provided us like the "coticules" which is better known as the "Belgium Razor Stone".
Not to mention some of the natural Japanese Waterstones.
I want to talk about Natural Sharpening Stones:: Which ones do you all like and why>> their pros and cons>> Because I do believe that Natural Whetstones still have their place.