Pyrex, Old and New and Exploding. Other Corning Glass Too.

No, highly doubtful if uranium glass would be any heavier in comparison to any other type. As the amount of uranium was too small. To small to even set off any alarm at airports either - Because uranium is mostly alpha active, so alpha parties can easily be stopped by even cardboard. Plus the quality is so low, that I think our shoes will register more radiation if we walked on a dry riverbed. And even though uranium has a half-life of around 4.5 billion years, here it is embedded in glass. So it's completely safe, but just like glass with lead in it, this too I wouldn't eat off from.

Pure uranium has a density of around 18.9 grams per cubic centimeter.

Lead is 11.3.

Iron is 7.8.

While pure gold is 19.3.

And plutonium (alpha phase) is 19.7.

Tungsten too is 19.3, same as gold, which is why they say that all the gold in Fort Knox has actually been stolen over the decades. And replaced with tungsten that's only plated with gold. So when this secret will become public, we'll see an economic collapse like never before, (conspiracy theories for which we will need to start another threat)...

However all these are in their purest elemental metallic form. While in glass, only a very tiny amount of salts of these elements is added. So too small to make any noticeable difference in weight.