The deal seemed too good to be true. There's a website that's been selling top quality diamonds at bizarrely low prices. Prices we couldn't find at any retail outlet. Prices so low, we could buy a diamond on a public radio budget. So we did. What we got in the mail was a tiny ziploc bag containing a scintillating mystery.

On today's show: the Planet Money Diamond (or whatever this sparkly rock turns out to be). We get it analyzed by the experts at the Gemological Institute of America. We investigate where it came from. And, we dive into the economics of glittery stones. Was this a new kind of internet scam? Some supply chain anomaly? Or is something just really weird going on in the world of diamonds?

This episode was produced by James Sneed. It was edited by Keith Romer with help from Jess Jiang, fact-checked by Emma Peaslee, and engineered by Kwesi Lee. Alex Goldmark is our executive producer.

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