Fot. K.Maciejak ROCKS AND MINERALS - NOWY KOŚCIÓŁ Nowy Kosciół - here you can find the most stunning and beautiful agates in Poland. They can be 0,1-100 cm big and show fairy colours. Therefore, agates from Nowy Kościół are all completely different, even whilefound in the same location. Much valued by collectors are crystals of smoky quartz, geodes and druses.