This chapter explores how contemporary jewelry can function as a space of resistance and resignification within gender norms, material culture, and sustainability. Based on the feminist theories of Simone de Beauvoir and Judith Butler, adornment is discussed as a personal and social practice, shaped by cultural expectations and identity performativity. From Beauvoir’s concept of “becoming woman” to Butler’s theory of gender performativity, jewelry is analyzed as a material and symbolic extension of the body, capable of challenging binary structures and normative aesthetics. This chapter also examines how sustainability in jewelry design extends beyond material selection. It involves ethical production, social responsibility, and the well-being of both creators and users. Sustainable practice in contemporary jewelry is proposed as a path toward well-being, fostering more conscious, inclusive, and ethical relationships with the body and identity expression. In this context, adornment becomes a symbolic and nonverbal means of communication through the material artifact. Combining critical theory, gender studies, and design research, this work positions contemporary jewelry as a tool to challenge hegemonic narratives and construct new modes of existence, moving beyond its role as a mere object of beauty. From this perspective, jewelry design is understood as an active agent in social discourse, with the power to challenge established norms and foster the performance of plural subjectivities.