Polished Diorite is a refined version of diorite, primarily used for decoration. It can be crafted by combining four diorite blocks or obtained through stonecutting. It has the same blast resistance as stone, making it a durable building material.
Polished Diorite naturally generates in some ocean ruins and can be traded with journeyman masons. It can also be crafted into slabs, stairs, and walls. Placing it under a note block produces a 'bass drum' sound.