Something like this came up in Robert R. McCammon's 1987 book Swan Song[1], one of the first novels to win the Bram Stoker award[2] for Best Novel (alongside Stephen King's Misery that year).

One of the survivors finds a glass ring (something like trinitite) among the post-nuclear-blast rubble of Saks Fifth Avenue[3] in New York and sees visions of the future (or something) through it.

[1] https://en.wikipedia.org/wiki/Swan_Song_(McCammon_novel) [2] https://en.wikipedia.org/wiki/Bram_Stoker_Award#External_lin... [3] my memories of this book may be embellishing this a bit....

For God's sake man! You must learn to shield your thoughts from the crystals!

Found footage movie, combining Trinity Test and Philadelphia Experiment maybe? I think it has legs

The video game S.T.A.L.K.E.R is happening in the Chernobyl Exclusion Zone, an area filled with super natural anomalies and artifacts due to the radiation. A legend/rumor says that there is a special crystal granting any wish at the center of the zone, inside the power plant's sarcophagus. The existence of the crystal can't be verified because a cultist faction, The monolith, is preventing anyone to reach the center.

https://en.wikipedia.org/wiki/S.T.A.L.K.E.R.:_Shadow_of_Cher...

…or basically the plot of twin peaks

Or the start of a new cult?

Which could also result in a B movie, I guess.