Brass mechanism to launch vertically a meteorite! This rare mineral is a siderite (meteorites that contains iron). Only 6 percent of the meteorite that fall on earth contains iron. This one fell on earth 4000 years ago, and has been reported in 1650 when the spanish Conquistadores invaded Argentina. With that display you can take in your hand a real piece of the history of the world ... And put it back flying! 25 gramms.