Aranjin Resources Ltd., together with its subsidiaries, engages in the exploration and development of mineral properties in Mongolia. The company explores for copper deposits. It owns 100% interests in the Bayan Undur project that comprises four mining licenses covering an area of 2,773 hectares located in Bayankhongor province, Mongolia; and the Sharga project, which includes one exploration license that covers an area of approximately 9,000 hectares located in the Gobi Altai region of Mongolia. The company was formerly known as Five Star Diamonds Limited and changed its name to Aranjin Resources Ltd. in June 2020. Aranjin Resources Ltd. was incorporated in 2012 and is headquartered in Ulaanbaatar, Mongolia.