So I was at my local Home Depot a while back and noticed they had bags of cheap landscaping rocks with some barely noticeable 'banding' in them (image shown below).
They look like sandstone. Wasn't sure if they would tumble/polish...for a couple bucks: I didn't mind the experiment.
Note: Pay no mind to my painfully swollen hand in the photo above (compliments of my 3rd C-19 vaccine shot).
Photo #177
Tumbled and vibed they have a 'wet look', but, no sheen or reflective polish. No surprise for a sedimentary rock.
I'm still pleased with the final outcome.![]()