Great stuff. I have but a single artifact made of polished stone. The amount of time spent on polishing had to have been a lot. I guess some stone will polish but not chip.
(appears to be loosely based on a fake ad from the 1970s)
https://ww1.prweb.com/prfiles/2017/06/25/14464551/SHW%20WEBSITE%20front%20page%20image.jpg
