![]() ![]() ![]() It is often black and looks like an eggshell coating the rock. This thin crust is called a fusion crust. When a meteorite falls through the Earths atmosphere a very thin layer on the outer surface melts. In Italy, however, it’s believed that touching a black diamond brings good luck to your marriage. Meteorites that have fallen recently have a black, glassy or ashy crust on their surface.
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