Patterns of pearl cultivation and circulation reveal vernacular practices that shaped emerging imperial ideas about value and wealth in the early modern world. Pearls’ variability and subjective beauty posed a profound challenge to the imperial impulse to order and control, underscoring the complexity of governing subjects and objects in the early modern world. Qualitative, evaluative language would play a prominent role in crown officials’ attempts to contain and channel this complexity. The book’s title reflects the evolving significance of the term barrueca (which became “baroque” in English), a word initially employed in the Venezuelan fisheries to describe irregular pearls. Over time, this term lost its close association with the jewel but came to serve as a metaphor for irregular, unbounded expression. Pearls’ enduring importance lies less in the revenue they generated than in the conversations they prompted about the nature of value and the importance of individual skill and judgment, as well as the natural world, in its creation and husbandry. The stories generated by pearls—an unusual, organic jewel—range globally, crossing geographic and imperial boundaries as well as moving across scales, linking the bounded experiences of individuals to the expansion of imperial bureaucracies. These microhistories illuminate the connections between these small- and large-scale historical processes, revealing the connections between empire as envisioned by monarchs, enacted in law, and experienced at sea and on the ground by individuals.