so who might have made this?? - I've no idea - possibly States or Eastern European in origin? Am assuming a vase - about 8.5 inches tall - bit like a sundae glass, and with opalescent foot which gives striking sunset glow in daylight and uranium reaction under u.v. torch. Bubbles are mostly random but not unattractive and there is some wear, but difficult to interpret for age.
If anyone has any clues as to maker etc., would be great to hear, and thanks for looking.