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Hello again, I bought a lot of stones on ebay, and this one I can't find any references. Is a very hard stone, I lapped on DMT 325, with no results at all,is the hardest stone I saw to date.The color is greenish with redish like rust spots,and black spots. Is look like marble and feel like marble, is 4x2x1/2.No slurry at all, no matter what method I used.Any ideea what can be?
It looks like a Soft or Hard Arkansas stone, if you're looking for useful stones for honing razors it's best to pass on these. Black and Translucent Arkansas stones can be useful but perhaps not ideal.
Thank you Piet, you are always so helpfull.I won't use it on razors, it just come in a lot of 9 stones.Regards, Livio
Looks like an ark to me as well.
thats a soft ark
Thank you very much gents. As always very very resurcefull.Soft arkansas it is. Down on the storage box.
Best regards
Livio
It will work great on knives, especially if used with oil