Grandview Klein Diamonds Inaugurates New Johannesburg Manufacturing Facility

Grandview Klein Diamonds held a ribbon-cutting ceremony on February 23 to inaugurate a new 10,000-square-foot office and manufacturing facility in Johannesburg, attended by company leadership alongside senior executives from De Beers Group. The opening extends the De Beers triple sightholder's African manufacturing presence, which had been anchored in Windhoek, Namibia, and Gaborone, Botswana, back to South Africa, where the company's continental diamond operations first took root.

The facility currently employs 50 trained professionals and integrates advanced planning systems, precision laser cutting and bruting technology, and automated polishing equipment. According to the company, these systems are designed to optimize rough yield, improve cutting precision, and reinforce transparency and compliance throughout the manufacturing process.

For Moshe Klein, CEO of Grandview Klein, the investment carries meaning beyond the operational. "For us, beneficiation is not a contractual obligation. It is embedded in our DNA," he said. "Diamonds should generate opportunity, skills and lasting economic value in the countries where they originate."

That philosophy has defined the company's approach to African manufacturing for more than two decades. Grandview Klein's predecessor, Julius Klein Diamonds, established its first African factory in Johannesburg in 2001, earning a sight from De Beers Consolidated Mines. A Windhoek factory followed in 2008, receiving a sight from the Namibia Diamond Trading Company, and a Gaborone operation was formed in 2011 under an allocation from Botswana DTC. The company was, by its own account, among the early adopters of beneficiation as a manufacturing strategy, a framework that South Africa's then-president Thabo Mbeki had helped articulate as national policy.

Grandview Klein as an independent entity dates to 2019, when the original Julius Klein organization split amicably. AD and his children Moshe and Shaya established Grandview Klein as a diamond manufacturing operation incorporating factories in New York, Johannesburg, Windhoek, and Gaborone, retaining De Beers sight allocations across South Africa, Namibia, and Botswana. Julius Klein Diamonds continued separately as a wholesale trading business under AD's cousin Martin Klein and his son Mark.

The company's New York City factory has long specialized in cutting and polishing very large diamonds of five carats and larger, while the African facilities focus on broader manufacturing and skills development. Early recruits to the African operations trained at the Harry Oppenheimer Diamond School, learning bruting, laser and mechanical sawing, automated polishing, and stone analysis, with some also trained on the company's proprietary Fantasy stock control program, which tracks stones from rough receipt through final polish.

The new Johannesburg facility arrives as the natural diamond sector navigates cyclical market pressure. The company's decision to commit capital at origin, rather than consolidate manufacturing elsewhere, signals a deliberate bet on the long-term viability of the industry in the countries that produce its raw material.