Hi Franceso...the colour showing in the grain in the first pic reminds me of why we call our discoloured ash heartwood 'olive ash'....they are so similar that this piece so could easily be olive ash. It's an interesting shape, which reminds me of what happens when I breathe out after holding my Breath with my belly drawn in and my chest puffed out - much of the bulk travels south! It's a brave shape, so unlike many that we see and it looks to be really stable, so a functional piece with a curve that keeps going from bottom to top, which is always pleasing, even if it doesn't pay homage to the rule of thirds. Have you been able to hollow out the wider, lower part of the form, or did you settle for keeping the hollowing straight sided?
Les