Fragments of the meteorite which struck the Russian city of Chelyabinsk on Friday has been found - but fakes are already popping up online.
The rock may have injured hundreds and left a 50-foot crater in a frozen lake, but that hasn't stopped locals from hunting the small pieces of 'space dust' in droves, according to reports.
Small pieces of the meteorite have fetched as much as £6,500 on Russian websites, reported to the Daily Mail.
More than 50 pieces have been brought to a laboratory in Yekaterinburg, while international collectors are said to be snapping up the rest.
But experts have already warned that there may be many fakes among the real artefacts.
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The Guardian spoke to Dr Natalie Starkey, a cosmochemist at the Open University and an expert in meteorites, who said anyone presented with a supposed fragment should look for a 'fusion crust' that looks shiny and smooth on the outside.
Meanwhile the British and Irish Meteorite Society has also issued a warning about fakes.
"You are highly advised to take the above precautions when buying on eBay, do your homework and buy from reputable dealers. Meteorite-Identification.com is a good source of information on suspect Ebay auctions. Meteorite Exchange has a page here which summarises eBay listings from known meteorite dealers."
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