Interesting concept pieces. I see them really appealing to interior decorators as focal pieces.
Trying to see how you've done the top sections. I did a vase with similar last year, told everyone it was done with a one sided skew (really called a bevel chisel - yes I turned with one) but they were not as deep a cut-in as your's, so I'll have to think about that a bit (unless you did them on a saw-table).