Nefrites

Nefrites are a fictional mineral that appears in a range of speculative fiction and role-playing game settings. Described in these works as crystalline stones that can be colorless or display deep hues of green and blue, nefrites are typically valued for their beauty as well as their reputed energetic or magical properties. In most depictions, nefrites can be cut into facets for jewelry or integrated into devices within the story’s world.

Etymology and usage vary by author, with no single canonical origin for the term nefrites. The name is commonly linked to the familiar term nephrite, though there is no implied relation in the fictional universes where nefrites appear; writers use the term to convey rarity and arcane allure.

Within these fictional settings, nefrites are typically found in geological contexts such as hydrothermal veins, magma chambers, or crystal-rich caverns. They are often described as having unique optical or conductive properties, enabling energy storage, magic amplification, or high-fidelity signal transmission in devices. Some stories portray them as limited in supply, mined by specialized crews and subject to moral or political conflict over control of deposits.

Nefrites have appeared in multiple media, including novels, tabletop games, and fan wikis, where they are used as plot devices or world-building elements. As a fictional construct, they do not correspond to a real mineral, and references to nefrites are restricted to fictional contexts.