The Mysterious Stones of Bologna
October 17, 2011 11:55 AM Subscribe
posted by Iridic (13 comments total)
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In 1602, a cobbler strolling outside of Bologna discovered a colorless stone
with the curious ability to "accumulate light when exposed to the sun and to emit it in the darkness." His lapis solaris
was to be the chemical sensation of the century.
Casciarolo's hunk of barite is not the only famous enigma to go by the name "Stone of Bologna." A Roman funerary slab engraved with a strange riddle
had been discovered in the city a century before, and the solving of it occupied antiquaries and alchemists for centuries. Jung called the puzzle "a flypaper for every conceivable projection that buzzed in the human mind."