Meteorites aren't blue
I know people who get called out to verify claims like this from time to time. Usually, they tell me, you dismiss it the minute you walk in the door - just something that the locals haven't ever seen before that couldn't possibly have come from space. Some of these stem from people trying to sell (almost always fake) "Moon Rocks," which is illegal. The FBI will
respond to your CL Ebay ad.
(Similarly, the only one I ever got was from relatives who found a big chunk of biotite, which they had never seen before, and figured it must be a "space rock." So they sent it to me. The really otherworldly thing about it was that it was wrapped in the real estate section of a South Dakota newspaper. Unbelievable prices!)
Oh, and I happen to own a very small sliver of the Valera meteorite, which is alleged to have struck and kill a cow in 1972 in Venezuela. But nobody investigated it at the time, so there is no direct proof about the cow. It is a real meteorite though.