I found this interesting piece recently. Apparently the artist (according to the card came with the vase):
“This invented decorating technology was honored by 1st prize in "Art and Craft" - competition in 2000 and European prize for glass art by European Union of Artists in 2002.”
It was bought in the Czech republic.
I upload several images with a blur signature (sorry, will do it better) and the same signature from another piece. The technique is quite peculiar I hope someone can tell me about the artist. by the way the vase is rather large (30cm, the other is 50cm).