RARE Polish Flint Lapidary Stone Slab! Leopard Skin Rhyolite I am unsure if these

I am unsure if these are good enough for lapidary uses

Weight: Approx 21

and sometimes needs treated

as it is a fairly hard form of agate

RARE Polish Flint Lapidary Stone Slab! Leopard Skin Rhyolite I am unsure if thesePolish 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