Generally you can feel the sems on a pelt, your marble still concerns me. it doesn't look right where the colors fade in and out., and the cracks and tiny round holes are out of place also. I wish i could hold it in hand for 2 seconds i could tell you exactly, it gives indications of light polishing or hand buffing, just my opinion, others will chime in on the matter. Pelts are one of the main types I collect so I am verry familiar with their traits.