Geophysical Survey Results in Discovery of Five Diamonds in Chhattisgarh
A recent geophysical survey in Chhattisgarh's Mahasamund district has resulted in the recovery of five diamonds weighing 1.22 carats. This discovery, confirmed by a joint venture between NMDC and CMDC, suggests the region holds significant potential for future diamond exploration and mineral resource development.
Highlights
- •A geophysical survey in Chhattisgarh's Mahasamund district identified five diamonds weighing 1.22 carats total.
- •The diamonds were recovered from 200 tonnes of bulk sample material at the Balod-Belmundi diamond block.
- •The exploration project is managed by a joint venture between NMDC and the Chhattisgarh Mineral Development Corporation.
- •Recovered stones include three gem-quality diamonds and two non-gem quality diamonds for industrial use.
A recent geophysical survey conducted in the Mahasamund district of eastern Chhattisgarh has led to the identification of a promising mineral resource. Exploration efforts in the Balod-Belmundi diamond block of the Saraipali region have successfully yielded five diamonds with a total weight of 1.22 carats. This discovery highlights the potential of the region as a significant diamond-bearing zone, marking a positive step for mineral exploration in the area.
The findings were confirmed following the processing of approximately 200 tonnes of bulk sample material. The recovery of these stones was announced on June 22, 2026, after the material was transported to a dedicated processing facility in Panna, Madhya Pradesh. The operation is being spearheaded by a joint venture between the National Mineral Development Corporation (NMDC) and the Chhattisgarh Mineral Development Corporation (CMDC).
Understanding the Exploration Process and Results
According to reports from the project partners, the Balod-Belmundi area was targeted for exploration after initial studies suggested it held promise for diamond deposits. These preliminary steps included comprehensive stream sediment sampling, detailed geophysical surveys, and approximately 500 meters of exploratory drilling. The successful recovery of diamonds from this volume of bulk samples serves as a validation of the geological models used to identify this site.
Of the five recovered specimens, three have been classified as gem-quality, while two are considered non-gem quality. Mining experts emphasize that the detection of gem-quality diamonds at such an early phase of exploration is an encouraging indicator. It suggests that more substantial diamond resources may lie beneath the surface in this particular region of Chhattisgarh.
Gem-quality diamonds are highly valued for their superior transparency, brilliance, and color characteristics, making them ideal for the jewelry industry. In contrast, non-gem quality diamonds are typically utilized for various industrial applications, including specialized cutting and drilling tools. Currently, due to the lack of a specialized secure storage facility at the exploration site, all five precious stones have been safely deposited in the high-security strong room maintained by NMDC at the Panna plant.
The specific findings include two gem-quality whitish diamonds, weighing 0.19 carats and 0.06 carats respectively. Additionally, the team recovered one yellowish non-gem stone weighing 0.32 carats, along with two brownish non-gem stones weighing 0.59 carats and 0.06 carats. As the project advances, these results provide a foundational basis for continued mineral assessment in the Saraipali region.
