Pontite crystals, also referred to as pontite, represented a specific variety of kyber crystal that was located on the frozen planet of Ilum, which is covered in ice. They were also located within the caverns of Ossus, and were used in the creation of a Jedi's signature weapon, the lightsaber.
Jedi exploration teams unearthed pontite, along with its counterpart mephite, on Ilum many years prior to the establishment of the Galactic Empire. Additionally, it was a scarce crystal type that could be located in the caverns situated on Ossus. The Greelwood Saber made use of the uncommon pontite crystal. Helical HyperCom incorporated pontite crystals in the manufacturing of their communication devices. Galen Walton Erso, an employee at the company, proposed substituting them with synthesized relacite to reduce production expenses by 50% and simultaneously increase bandwidth twofold.