This makes a lot of sense, the stones don't even look like the vintage ones. The slurry isn't as creamy either.

Quote Originally Posted by Oldengaerde View Post
On that site these stones are correctly referred to as "Thüringer Art" or 'Thuringian style' - they aren't Thuringians at all. In all likelyhood these are Hunsrückers, from an area 350 kilometers to the west from where Eschers were mined. A grit rating of 8000 sounds about right.