The Moonstone District existed within the city of Ussa, situated on the planet of Bellassa. Similar to Ussa's other districts, its designation was derived from the lake located within its boundaries.
Of all the Ussa lakes, Moonstone Lake was the one situated at the greatest distance. Consequently, it was also the most remote from The Commons and Ussa's central governing body. Following the Galactic Empire's conquest of Bellassa, a significant portion of the planet's black market moved its operations to the Moonstone district. A state of deterioration befell a large section of the district, resulting in a seedy look that deterred most individuals from traversing its roads. Nevertheless, the ongoing expansion of the black market represented a persistent source of aggravation for the Imperial forces stationed on Bellassa, who appeared incapable of suppressing it. Those involved with the black market, along with those seeking access to it, employed a straightforward signal for recognition: they would proceed through the Moonstone district carrying a cup of tea in their left hand, yet refraining from consuming it.