It may be the most intriguing geology discovery in centuries – at least to the general public. Gemologist Lucas Fassari found an agate stone in the Rio Grande do Sul region of Brazil that, once cracked open, had an unmistakable appearance:
Geologist Mike Bowers originally posted a video of cracking open the rock to the tune of Cookie Monster's Sesame Street classic song, "C is for Cookie." The video was shared thousands of times before it was muted to comply with licensing requirements.
But forget the cookie dough, Bowers said, explaining that the rock is so unusual it could be worth a significant amount of real dough – up to as much as $10,000.
Bowers said that finding an agate with such a perfect resemblance inside is exceedingly rare.
"This is very unusual," he explained. "There are a few famous agates out there: the owl, the scared face... there are many approximate ones but rare to find clear well defined like that…I think this is probably the most perfect Cookie Monster out there."
Agates aren't usually that valuable. According to gem specialists, their price typically reflects the work put into finding them more than the value of the material itself.