Search:

SORRY, I DON'T HAVE A PHOTO OF THE ROCK, BUT ITS FOR THE MOST PART VERY DARK, BLACK WITH SOME LIGHTER HIGHLIGHTS.
SUPPOSED TO BE A FINISHER, ABOUT, APX, OR SO, 15K GRIT.

...

Just having a thought, so stand back, has anyone ever used or had any experiance with Chinese River Rock [Sedimentary Stone] as a finisher?? Been told it's mostly about 15K Grit. I"ve only heard of...