One of the largest sales on record came from a 1.9 kg moon rock called the Dar al Gani 1058, found in Libya in 1998 and sold last year at an auction in the US for $330,000.
A 161 kg meteorite found in Argentina and believed to have come from the asteroid belt between Mars and Jupiter sold for $93,000 on eBay in 2006.
Anyone who finds what they think is a meteorite should have it assessed by an expert, said Gutheinz, and in order to sell it, they should first get a certificate that documents the authenticity.
"Most of the time, eBay would be a good place to sell, but if you have a large rock you'd want to go to an auction house, and they're going to want to know where it was, and they would require independent analysis," he said.
