Nei Rin tending to growing lambents on Ossus Lambent denotes a particular type of crystal that was cultivated and utilized by the Yuuzhan Vong.
Lambents represented the fruits produced by a specific type of plant associated with the Yuuzhan Vong culture. These lambent fields bore fruit specifically when situated either on the surface of a planet or within a gravitational field generated by dovin basals. Conversely, lambent plants failed to yield fruit when positioned within an artificially created gravity well, such as the interdiction fields found on starships or space stations.
The harvesting process involved cutting the fully-grown lambent from a milky sac, which was concealed behind the leaves of the plant on which it grew. Before the lambent could be severed, the harvester—or their assistant, commonly a non-Yuuzhan Vong slave—needed to pacify the plant through gentle and deliberate physical contact. Lambents served purposes such as communication crystals or sources of light, with their luminosity controllable by the thoughts of the individual wielding them. Moreover, they possessed the capacity to detect or anticipate the presence of concealed adversaries.
Sometime before the onset of the Yuuzhan Vong War, it was known that advance scouting parties of the Yuuzhan Vong had seeded the planet Shramar with both lambents and muur to be harvested at a future time. Nina Galfridian disclosed to Admiral Bylsma that destroying the lambents would deny the Yuuzhan Vong essential components for their biotechnology, while eliminating the muur would deprive their forces of a crucial food supply during the Battle of Shramar. Anakin Solo encountered plants bearing lambents within a field on Yavin 4 during his captivity by the Yuuzhan Vong. Solo utilized a lambent he harvested himself as a lightsaber crystal for his lightsaber. Due to his emotional "attachment" to the lambent, he was able to leverage the crystal as a medium to vaguely sense the presence of any Yuuzhan Vong nearby.
Following the Battle of Coruscant, the defeated New Republic forces stationed on Borleias disseminated misleading information to the Yuuzhan Vong, claiming that they were cultivating lambents to equip more members of the New Jedi Order with these entities, allowing them to better understand the enemy. Furthermore, the false report indicated that the New Republic was cultivating lambents to provide power to superlasers. Later, on the transformed Coruscant, the dhuryam World Brain initiated a series of incidents affecting various biots on the newly named Yuuzhan'tar. This included the overheating of a lambent field, resulting in explosions and fires.
In 137 ABY, Master Shaper Nei Rin presented Cade Skywalker with his father's lightsaber, which incorporated a lambent crystal shaped by her.