Diagenesis refers to the transformation of sediment into stone through processes of compression, embedding, and time. In this series, the notion of trace unfolds through a material dialogue between VHS magnetic tape and plaster. The tape is pressed into the surface and partially withdrawn before the plaster has fully set, leaving fragments embedded while others are released. What remains is neither imprint nor object, but a shifting threshold between presence and absence, surface and depth. These works evoke an archaeological sensibility: moments of exposure where the glossy magnetic tape emerges from the matte ground, recalling the discovery of crystalline formations within the earth. The use of pigments historically associated with drawing—ochre, graphite, and ink—further situates the work between inscription and sediment, where gesture is not only made, but gradually fixed into matter.