watch 02:21 The Loop (Games) Do you like this video? Cobblestone is a material on ROBLOX. Like the Wood Planks and Metal materials, it was released in the summer of 2014. It transforms any brick into Cobblestone and is usually used for rocks. Retrieved from "https://roblox.fandom.com/wiki/Cobblestone?oldid=374057" Categories: Materials Game development Community content is available under CC-BY-SA unless otherwise noted.