From Gemstones to Industrial Materials: A Taxonomy of Material Identity Transitions

This paper proposes a ten-type taxonomy for classifying the trajectories through which materials transition from gemological or ornamental identity to industrial, scientific, or technological relevance. Developed through systematic analysis of over fifty materials, the framework distinguishes between full-pattern transitions (diamond, corundum), elementally blocked trajectories (beryl), inverted patterns (pyrite, spinel), structural inspiration (opal), natural abundance democratization (amethyst), self-destructive technology (topaz), obscured science (moldavite, Prince Rupert's drops), scale transcendence (mesoporous silica nanoparticles), cultural obsolescence (turquoise, ivory), and biotechnological replication (cultured pearl). A fundamental declaration establishes that the taxonomy classifies transition trajectories, not materials themselves, allowing a single material to traverse multiple types simultaneously. The framework further organizes these types along three axes: Market, Knowledge, and Culture, reflecting the economic, scientific, and social dimensions of material identity transformation. Discriminating criteria, exceptions, and methodological limitations are discussed. The paper additionally introduces two sociological factors modulating transition speed across all types: the progressive disconnection of urbanized populations from natural environments, and the generational reconnection with material function that reframes luxury as waste.