The illusion of weightlessness in massive stone blocks is a testament to the genius of sculptors who manipulate form, balance, and perception to defy gravity. Artists achieve this effect through meticulous planning and execution, often beginning with careful selection of the stone to ensure uniformity and structural integrity.

Key techniques include undercutting—carving deep recesses beneath protruding elements to create shadows that suggest lightness. The play of light and shadow is crucial; finely textured surfaces catch light differently, enhancing the illusion. Michelangelo’s "Pietà" exemplifies this, with the Virgin Mary’s drapery appearing to float effortlessly.

Another method involves dynamic composition, where asymmetrical balance and flowing lines guide the viewer’s eye, making heavy stone seem buoyant. Modern sculptors also use negative space strategically, carving voids that imply movement and airiness.

Ultimately, the mastery lies in the artist’s ability to transform dense material into ethereal forms, blending technical precision with creative vision.