Pietra Piasentina is quarried in a small area of the north-eastern piedmont slope in Friuli, in the area of the Julian Prealps including the municipalities of Faedis, San Leonardo, San Pietro al Natisone and Torreano, in the Province of Udine in Friuli Venezia Giulia, an area that in 2004 was recognized as the Pietra Piasentina stone working district.

There are about ten active opencast quarries, operated on the principle of full respect for the environment and proper landscape restoration, with a good reserve of homogeneous and uniform material.

In the quarry Pietra Piasentina appears as a mass of erratics of different sizes varyingly interconnected with clayey soil.