In this work, we investigate the evolution of a two-phase system composed of clear air and unsaturated water vapor, including advected Lagrangian particles as water droplets. This, as a whole, represents an idealized cloud–clear air configuration. The flow evolves within a decaying, shearless, and stratified turbulent field, where both stably and unstably stratified conditions are considered. This configuration allows us to isolate and analyze the fundamental mechanisms governing the system and the interaction between microscale turbulence and buoyancy-driven motions. Significant focus is placed on the role of buoyancy in generating wavelike responses in the velocity and thermodynamic fields. These responses are examined and compared to the theoretical behavior of internal gravity waves (IGWs), with attention to the amplification or damping of vertical velocity fluctuations as a function of the intensity of stratification and initial conditions.