One of the local woodworking stores is selling out of their J-nat stones so I picked one up for cheapsies.

Top view


Close up of the sticker


Bottom view

(NB I have flattened the bottom a bit so it will sit level)

It is a hard stone, harder than a coti but not as hard as a PHIG
It has a pale green slurry
It feels smoother than a coti, but maybe not quite as smooth as a PHIG