Tanzania Diamond Production Increase by 23% in Q3 2016

Tanzania diamond production 2016

Tanzania’s diamond production from the Williamson diamond mine in northwest Tanzania rose by 23% in Q3 2016 to 53,034 carats (ca), from 43,155 ca in Q3 2015.

This was indicated in the latest trading update, published by the majority owner of the mine, Petra Diamonds (LSE:PDL), on October 24th, 2016.

The update further notes that the commissioning of a new mill section at the Williamson mine is due to commence in Q4 2016.

Tanzania Investment Guide 2026 Free Edition

“Upon commissioning, both throughput and grades will improve […],” Petra indicates.

Tanzania Diamonds

Diamonds in Tanzania are found mainly in the Williamson diamond mine, 23 kilometers (14 mi) northeast of Shinyanga, in the northern part of the country.

Petra Diamonds, through its subsidiary Williamson Diamonds Limited, holds 75% of the ownership rights over the mine, while the Government of Tanzania owns the remaining 25%.

In 2015, the company produced 202,265 ca and plans to increase its production to 350,000 ca per annum in 2017.

In 2015, Tanzania was the 10th largest diamond producer in Africa after Botswana (17.3m ca), Angola (7.1m ca), South Africa (6m ca), the Democratic Republic of Congo (3.15m ca), Namibia (1.92m ca), Sierra Leone (0.5m ca), Zimbabwe (0.5m ca), Lesotho (0.35m ca) and Ghana (0.24m ca).

Tanzania Investment Guide 2026 Full Edition

According to Petra Diamonds, the Williamson mine contains large diamond resources of approximately 38.1m ca.

Want to know more about Mining in Tanzania? Our free overview of the Tanzania Business and Investment Guide 2026 covers Mining, plus key sectors and investment opportunities. The complete 141-page edition includes policies, taxation, key regulations, full macroeconomic data, and sources.

Download Free OverviewGet the Full Guide
Related Posts
Tanzania Mineral Testing Laboratory Dodoma 3d plan
Read More

Dodoma Mineral Testing Laboratory on Track for September 2027 Completion

The Geological Survey of Tanzania (GST) says construction of its Dodoma mineral testing laboratory in Kizota, Dodoma, is progressing on schedule, with completion set for September 2027, a year after Minister for Minerals Anthony Mavunde laid the foundation stone in August 2025. The TZS 14.3 billion (approx. USD 5.4 million) facility is expected to become the largest of its kind in East and Central Africa, offering internationally accredited testing services and easing long-standing sample-analysis delays for artisanal and small-scale miners.
IMF Tanzania flag
Read More

IMF Approves USD 443.9 Million for Tanzania, Projects 6.2% GDP Growth Supported by Mining, Agriculture, and Tourism

The IMF Executive Board has approved an immediate disbursement of USD 443.9 million to Tanzania after completing the final reviews under the Extended Credit Facility and Resilience and Sustainability Facility programmes. The IMF said Tanzania maintained strong economic growth and macroeconomic stability while highlighting the need for continued reforms and fiscal consolidation.
Tanzania Grinding-Ball
Read More

Chinese Company to Build Grinding-Ball Factory at Buzwagi SEZ

China's Oriental Casting and Forging Ltd plans to establish a factory for steel grinding balls and other mining consumables at the Buzwagi Special Economic Zone in Kahama, Shinyanga, following a meeting between Minister of Minerals Anthony Mavunde and the company's managing director Hou Songcun. The project is part of Tanzania's push to manufacture mining consumables locally, cut import dependence and position itself as a regional supply hub, though no investment value or job figures have been disclosed.
Tanzania Mining Revenues 2025-2026
Read More

Tanzania Mining Revenue Hits TZS 1.39 Trillion in 2025/26, Beating Target by 16%

Tanzania mining revenue reached TZS 1.394 trillion (± USD 558 million) in the 2025/26 financial year, surpassing the annual target of TZS 1.2 trillion by 16.13% and marking a 30.2% increase over the TZS 1.071 trillion collected in 2024/25. The result caps a period of rapid growth for the sector, whose GDP contribution averaged 11.9% in 2025 and whose mineral exports rose 31.1% to USD 5.4 billion.