  The spherically symmetric thin shells of the macroscopically stable
quark-gluon matter are considered within the frameworks of the bag model and
theory of discontinuities in general relativity. The equation of state for the
two-dimensional matter is suggested, and its features are discussed. The exact
equations of motion of such shells are obtained. Distinguishing the two cases,
circumstellar and microscopical shells, we calculate the parameters of
equilibrium configurations, including the conditions of decay (deconfinement).
