I think you're looking with high probability at a piece of lampwork made in Germany. Could be anywhere from Lauscha to North Bavaria - there are quite a lot of artists who specialise in this type of work which is fashioned over a gas flame from prefabricated rods. In that sense it is not like the glass we normally discuss here - it does not require a pot of molten glass, just a gas flame and some rods. O, and some colours, metal salts and some skill. Some of the lampworked items (big names) make big bucks - but a lot of it is made in anonymity and will not fly high...