Investigation results on shock metamorphism of rock taken from the environs of the natural meteoritic crater Ja¨nisja¨rvy, Karelia, Russia, before and after its spherical explosive compression in the laboratory‐scale experiments, are presented. Elements migration in stress‐wave of increasing along the radius intensity in the solid state, as well as peculiarities of melting of polyminerals rock on isentropes under rarefaction and at the Hugoniots have been observed. A correlation has been established between main characteristics of shock melt glasses, obtained in rock samples of the Ja¨nisja¨rvy crater at meteoritic impact and during explosive laboratory‐scale experiments. © 2004 American Institute of Physics