Check this out: Do you know what that is? 
No, I am not trying to bring nature into my apartment by covering its beautiful tatami with stones. And I’m not into stone appreciation either…
This is in fact stone chocolate from a nearby shop. I found its appearance so interesting that I just had to try it… The mouth feel is somewhat rough indeed, but once you get through the sugar coating on the outside, the chocolate is rather nice. The stones taste like m&m’s, but they are a bit harder to bite, probably because of the irregular shape. I’ll see if that store has this type of chocolate more often, I think it makes an interesting gift…