Quote Originally Posted by Utopian View Post
In my experience the dragon's tongue is more coarse than the purple slate.
Agree the purple I have is 10k and can produce a nice edge the Dragons Tongue is much coarser. Some do get the DT and Welsh Black confused due to coloration. The DT can be darker than the "Black". Are you sure you do not have a DT instead of a Black? You may want to post a pic so AJ can have a look see.