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New JNAT and unknow stone
Hello, I got this stone on Ebay a while ago, in separate transactions, the smaller is Jnat, I get it from Japan, not from 330mate, from a different guy, is a hard stone, very fast with slurry, and finishing is about 8-10K. I get good shave from this stone. Do you have any ideea what it is?
The other stone, is from USA, the hardest stone I have ever know, is a green-blue with some darker stripes.
This stone was very flat, with just a little dishing in the middle. I can't put a grit on this one , it is very hard to raise slurry, and it come with a slurry stone, from same stone. The seller don't have a clue for what was used.
Thank you very much for your input.