ok..... today i spent a bit of time looking through the scrap pile at a local stone shop..... *(they specialize in countertops and have a amazing collection).....

all of which have been polished absolutely smooth in a polishing machine *(i will still lap them of course...)

just wanted opinions of the stone and whether or not they will serve the purpose i am looking for which is a ultimate polish on a blade.. *(i know the proof is in the pudding but i am looking for opinions........)

2 of the stones feel *(to me) like they would be in the 10k +++ grit....

white... harder than chinese algebra


closer up...



this is the other... black... mirror finished hard hard hard dense stone...



the others...







i have no idea..... they will be tested with a microscope on a old razor to see what they do to the edge......