There's a mineral so rare that only one specimen of it has ever been found in the entire world.
"It's called kyawthuite (cha-too-ite), a tiny, tawny-hued grain weighing just a third of a gram (1.61 carats). On first glance, you might mistaken it for amber or topaz; but the unassuming mineral speck has value beyond measure."
Like the guy who cut down the oldest know tree to find out how old it was. It wasn't known how old it was at the time. (They have found probably older but don't want to cut them down to find out.)
So this mineral was found in the Mogok region of Myanmar, and the second rarest mineral, painite, was also found in the Mogok region of Myanmar. It sounds like there's something funky going on there geologically speaking, and it's probably not a coincidence that the country had been mostly closed off from the rest of the world for decades.
Yeah, it's pretty nice actually. Cool gardens, gem room, lots of dino and evolution stuff.. Not as big as the AMNH in Manhattan, but they did a good job with their smaller space.