  This work proposes a stellar model under Gauss-Bonnet $f(\mathcal{G}, T)$
gravity with the conjecture theorised by Mazur and Mottola, well known as the
gravitational vacuum stars (gravastars). By taking into account the
$f(\mathcal{G},T)$ stellar model, the structure of the gravastar with its
exclusive division of three different regions namely, (i) the core interior
region (ii) the junction region (shell), and (iii) the exterior region, has
been investigated with reference to the existence of energy density, pressure,
ultra-relativistic plasma, and repulsive forces. The different physical
features like, the equation of the state parameter, length of the shell,
entropy, energy-thickness relation of the gravastar shell model have been
discussed. Also, some other physically valid aspects have been presented with
the connection to non-singular and event-horizon free gravastar solutions,
which in contrast to a black hole solution, might be stable without containing
any information paradox.
