On 5-10 August 2024, author TTS organised a field trip for eight persons (including authors JCZ and LHY) to the Martapura diamond-mining area in southern Indonesia. The trip was guided by author NAN and Raditya Fitrianoor Putra. A recent article in The Journal on the history and properties of the Banjar-masin diamond (van Leeuwen & Zwaan 2023) had stirred our interest to learn more about the current status of diamond mining in that area, which is located on the island of Borneo about 20 km south-east of Banjar-masin city near Banjarbaru, the capital city of South Kalimantan Province (Figure 22). Diamonds have been found in alluvial deposits of the Banjarmasin-Marta-pura area since around 600 CE (Webster 1983).

doi.org/10.15506/JoG.2024.39.4.311
The Journal of Gemmology
Staff publications

T. T. Sun, Zwaan, H., N. A. Nugroho, A. Mustopa, & L. H. Ying. (2024). Update on diamond mining in the Martapura area, South Kalimantan, Indonesia. The Journal of Gemmology (Vol. 39, pp. 311–314). doi:10.15506/JoG.2024.39.4.311