PIECES WITH SURFACE TEXTURE

I found this piece on the right that has a lot of surface texture and I really like it. I don't really like that the top part is smooth while the rest of the piece is very rough. I didn't find a lot of information on this piece so I'm not exactly sure of the process that was used to create this effect and the surface texture.

The piece on the left was something I came across and I really like how it looks. I believe the article said this piece was wood fired which helped to give it the effect it has. I really like the grooves along the neck of the piece and also the random shell shaped spots on the side of it.