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The classic barber hones vary widely in grit size, at least the paper grocery bag full that I have do. The finest has been the Apart and some are so coarse I will not use a razor on them for any...

The two on the left are belgians which used to be glued together, both are natural stones with the Purple one being the coarser, approx 4000-6000 grit and the yellow the finer grit, 8000-10000 grit....