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The true color is light greenish -gray , the size is 7 3/4 x 1 1/2 x 3/4 , the grit I would say this :
dull shinny finish , no lines under 70x magnification with slurry. Bevel set flat to the base...

I just recently both a hone and have no idea what is it.
It is very light (weight) hone , cuts extremely well and fast.It is hard stone and gives very very keen edge. The grid is about 6K-8K.
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