The Marmoreal collection marks an evolution in Tantri Mustika's practice, emerging from her terrazzo work through the Striated Vessels series. These pieces reinterpret traditional Japanese tile aesthetics through a contemporary lens, demonstrating her continued exploration of pattern and form. "I discovered I could reinterpret familiar materials in entirely new ways," Mustika reflects on the collection's genesis. This insight guided the development of pieces that move beyond conventional surface decoration, creating dynamic interactions between structured patterns and organic forms.

The technical aspects of the Marmoreal collection showcase Mustika's approach to clay manipulation. Her marbled clay technique develops complexity through grid-like expressions, checkered patterning, and striped arrangements that flow across undulating forms, creating what she describes as "a deliberate tension between strict patterning and organic movement." Three significant works define this period: the Striated Vase, which established a new direction in surface treatment; the Marmoreal Checkered works, demonstrating pattern play; and the Block Marbled Vases, which reveal the subtleties of single-colour marbling. Each piece presents material contrasts – glossy marbled surfaces against matte clay, enhanced by considered gold accents.

"These works represent a significant shift in my approach to making," Mustika explains. "They allowed me to demonstrate technical proficiency while pursuing deeper artistic exploration." This transition from production-based practice to more contemplative creation marked a development in her artistic journey. The collection's name, "Marmoreal," references its nature as a reimagining of marble through ceramic form, bridging traditional material references with contemporary ceramic approaches.

For Mustika, the Marmoreal collection represents both technical development and creative exploration. These works showcase her ability to balance meticulous detail with organic variation, creating pieces that feel both considered and naturally evolved. While maintaining the material understanding evident in her terrazzo work, these pieces expand into new territory, establishing dialogues between pattern, form, and surface treatment that reflect her continuing exploration of ceramic possibilities.