Aussie-French Team Probes Meratus Geopark Diamonds in South Kalimantan

RRI.CO.ID, Banjar - The ancient geological mysteries of South Kalimantan have drawn international attention as a joint team of gemologists from Australia and France arrived to investigate the rare diamond deposits and unique rock formations of the Meratus Geopark.

This scientific expedition aims to elevate the region’s status from a local treasure to a premier global geotourism destination and a hub for world-class geological research.

A key focus of the visit was the Sultan Adam Forest Park (Tahura) in Banjar, where researchers conducted a field study on Thursday, May 4, 2026. The head of the Tahura Sultan Adam Technical Service Unit, Ainun Jariah, confirmed that the experts specifically prioritized the Snakeskin Serpentinit rock, a geological landmark crucial to understanding the region’s diamond formation.

“The snake-scale serpentinite rock holds immense scientific value as it serves as physical evidence of Kalimantan’s historical emergence from the ancient ocean floor. This rock formation acts as a carrier for various high-value minerals, including diamonds and amethysts,” Jariah explained during the visit, as quoted by Antara.

The expedition commenced in the Mandiangin area, where the team was briefed on the park’s geological wealth, biodiversity, and conservation-based management strategies. Following a profile screening at the Geo Theater, the scientists toured orchid conservation sites and wildlife habituation areas, highlighting the region's commitment to preserving endemic flora and fauna alongside its geological assets.

The scientific journey reached its peak at the Serpentinit site, renowned globally for its unique texture and academic significance, before concluding at the historic Dutch Pesanggrahan site in the Meratus Mountains. Deputy Chairperson of the Meratus Geopark Management Body (BP), Ali Mustafa, noted that the mission extends beyond academic curiosity to include the study of the specific types, characteristics, and unique coloration of diamonds sourced from South Kalimantan’s traditional mines.

The research also involves a detailed identification of traditional diamond mining systems in Pumpung, Gabin, and Karang Intan to provide formal scientific documentation of practices passed down through generations.

Mustafa emphasized the strategic importance of this international collaboration. “This visit is part of an international promotion to highlight the uniqueness of Kalimantan diamonds as one of the world's finest geological heritages. This step simultaneously strengthens the position of Meratus Geopark as a world-class geotourism destination and geological research center," said Mustafa. ***