What Is the Most Rare Jewel

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The current titleholder for rarest gemstone on the planet is something called Kyawthuite (pronounced “chow-tweet”). Only one single crystal of this gem has ever been found, and it weighs just one-third of a carat. That’s smaller than a grain of rice, yet it’s worth more than a house.

Discovered in Myanmar’s Mogok region—a valley famous for crazy rare gems—this orange-red pebble is officially a mineral no one else has duplicated. Scientists confirmed its unique chemical formula in 2015, and it hasn’t been seen since. Imagine winning the lottery, but the ticket is a speck of dust.

Why Is It So Ridiculously Cool?

For starters, Kyawthuite isn’t just rare—it’s cosmically rare. There are only five other known minerals on Earth that exist as a single specimen. That’s right: you have a better chance of finding a four-leaf clover for every atom in your body than stumbling upon this gem.

But here’s the kicker: it’s gorgeous. Under light, it glows like a fiery sunset, with a deep orange-red that looks almost molten. The gem’s color comes from a mix of bismuth and antimony—elements that sound like they belong in a sci-fi movie, not a ring.