Collecting Radioactive Glass

For many glass collectors, the only color that matters is Vaseline. It gets that name from its resemblance to the color of petroleum jelly (Vaseline) Vaseline glass gets its odd color from radioactive uranium, which causes it to glow under a black light.   Yes, that Uranium.  The glass emits radiation, but the amounts are tiny, infinitesimal, ridiculously small. Collector’s Weekly has much more on the history of this glass… which is still being produced today.