Meteorite hunters, as reported by ABC News, are converging on Chelyabinsk, Russia, seeking pieces of a space rock that exploded above that city. Even small fragments, they say, could be worth thousands of dollars.Want one? Experts on buying, selling and collecting interstellar rock advise caution. You can be hoodwinked by unscrupulous meteorite dealers. Worse, you can buy a bona fide meteorite, and, by failing to show it proper care, see it disintegrate into stardust before your very eyes.