Hone ID help

[relli1130]

Saw two hones today at local antique shops. Both were advertised as knife sharpening stones. One was $8 and the other was $58.00. But no information on either. I took pics to share hoping someone here might have seen something like this, and could help identify. The smaller one smelled of oil, and has a chip in it. Both seemed to be of the same rock...at least to me. I thought about dropping 8.00 on the small one but thought I'd wait to see if anyone has any input. Thanks in advance.