I was tunneling through a mountain when I came upon a few weird stone blocks. They look the same as normal smooth stone, but they're harder to break, and there's this… Sort of prism-like, burst as they break. Anyone know what's up with this? I asked this question a few weeks ago, but all I got was some dumbass saying "Legend says that this stone block with give you ultimate power," or something like that. I ran into a few more, so I decided to ask again.
Added (1). Do Silverfish blocks take longer to break with than a normal stone block, when you use a pickaxe?
Added (2). I'll try to find a picture, but other than the weird way that they break, and the fact that they're harder than normal blocks, they're the same as normal smooth stone.