I've had a few sets of these before, however this one is much larger than normal which usually run 3" in diameter while this one has a 5" diameter & the core color is a bit strange almost like solid Czech Malachite with gold running through it. Whats left of an old paper label simply say Genuine Murano Glass & the word IMPORT in caps running through the blue bar on the label. Picked it up because the core color is one I haven't seen before. About twice the weight of any I've had. Any chance of a particular attribution due to the oddball color? Thanks, Ken