Trinitite is one of the many results of the 1945 Trinity nuclear test in New Mexico. This was the first time a nuclear weapon was detonated, and marked a major turning point in human history.
The intense heat and power of the bomb turned much of the desert floor subjected to the blast to a glassy substance we now know as trinitite. Shortly after the nuclear weapon development and tests went public, people flocked to the blast site and pocked as much of the mineral as they could.
Trinitite samples quickly became a popular nuclear-novelty, and was endorsed by the US government as proof that lingering nuclear fallout posed no real threat. In 1952 this changed.
The US army bulldozed the site, and declared any trinitite taken from the site was illegal property of the United States Government. But what about the tons of the stuff in circulation?