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I think so, "green chrome" being .5 chromium oxide? But this isn't my area of expertise so I would wait for one of the other guys who are into this sorta thing answer. I literally run around the...

I think there are two...one polishing componds are 50k-100k (and varied other options) grit and two 10-12K stones are unique in there difficulty to use. Either will produce a nice shaving edge...