Wow, those are pretty! Is it my imagination, or is the green one cased?
I've read a few places that the hyaliths and lithalyins were copied my many shortly after their introduction. Harrach is another name that has been associated with them. Truitts: "All of the glassware produced by Buquoy was quickly imitated in Bohemia and Germany. Glassware produced by numerous glass makers, especially in Bavaria, is absolutely indistinguishable from Buquoy's." Sigh.
The 19th C hyalith and lithalyins were usually decorated in some way. Yours look 20th C to me (FWIW), which I imagine means they could have been produced in other countries, too. Hopefully someone knows something about those colors/shapes.