The circular economy presents opportunities for radical holistic change—minimizing raw-material extraction and changing consumption habits while regenerating ecosystems. Jewelry materials are “technical nutrients” that remain within endless industrial closed loops because they cannot decay. That is, all minerals ever extracted in history exist aboveground. For example, an estimated 190,000 tons of gold are held aboveground, but only 1–2% of annual stocks of jewelry are repurposed. Some 80% of impacts of products are determined by designers’ choices of materials and processes. Thinking and learning about the next life cycles of materials and products while designing creates ongoing material flows, eliminates waste, and saves resources through diverse circular design strategies that implement a mindset of material preservation as borrowed resources for use and return for ongoing use Graetel (1995).