Barry Sautner made some authentic Diatetra cups and maybe a vase or 2. I think that one of Barry's pieces may be in Corning Museum. Barry engraved, sandblasted and etched his pieces as this was the way that it is surmised the original diatetra cups may have been made after they had been cast.
This vase shown could very well be Czech as I have seen Petr Novotny make some similar items. The original vase is blown then an additional gather is applied in the up and down configuration making the "lattice" type decoration. This one looks like this was done in 2 different colors of glass and layered on separately.