Check the listing for details. RARE Polish Flint Lapidary Stone Slab!. Condition: New. Listed at 123.99 USD. Polish Flint is a rare and exciting form of Orbicular Flint from Poland! It tends to have some ribbed wavy-like pattern along with giant egg orbs, which all come together to form some amazing pattern! It takes a good polish, and works into some unique cabochons. It is getting very hard to come by, and I was just informed that the mine this comes from has been permanently shut down, due to cultural artifacts being found on-site; though I've been unable to verify if this information is true. Through all the decades I've been rockhounding, I've only ever run across polish flint rough a handful of times; now its going to get even harder to find! Polish Flint is one of my personal favorites in the flint world, and the pictures of this stone show why! Measurements (inches - longest - approx): 7.9 x 3.9 x .25 The last photo has been taken dry so that you may see any defects. The other photos have been taken wet to simulate a polish.