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.