Grandview Klein Diamonds Opens New Manufacturing Facility in Johannesburg

Grandview Klein Diamonds inaugurated a new 10,000-square-foot office and manufacturing facility in Johannesburg on February 23, with senior executives from De Beers Group joining company leadership for the ribbon-cutting ceremony. The expansion gives the New York-based triple De Beers sightholder a strengthened foothold in South Africa's diamond manufacturing sector, completing a network of African facilities that already includes factories in Windhoek, Namibia, and Gaborone, Botswana.

The facility currently employs 50 trained professionals and runs a production stack built around advanced planning systems, precision laser cutting, bruting technology, and automated polishing equipment. According to the company, those tools are designed to optimize rough yield and improve cutting precision while reinforcing transparency and compliance in the manufacturing process, language that speaks directly to the scrutiny the natural diamond industry now faces over traceability and chain-of-custody standards.

CEO Moshe Klein framed the investment in terms that go beyond regulatory checkboxes. "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." The company described the Johannesburg facility as a strategic investment in beneficiation and technical capacity at origin, with the aim of enabling producing nations to participate more fully in the diamond value chain rather than simply supplying rough to be processed elsewhere.

The opening comes during a period of acknowledged pressure for the natural diamond sector, which has faced cyclical market headwinds alongside the continued rise of lab-grown alternatives. Grandview Klein's position is that continued manufacturing investment at source signals confidence in the long-term strength of the natural diamond market and the communities that depend on it.

For Grandview Klein, this is familiar ground. The company's roots in South African manufacturing stretch back to 2001, when its predecessor established the first African factory in Johannesburg and was subsequently awarded a sight by De Beers Consolidated Mines. Julius Klein Namibia was incorporated in June 2007, and the Windhoek factory officially opened in March 2008 in a ceremony attended by Namibia's then-president, Hifikepunye Pohamba, backed by an initial investment of more than 30 million Namibian dollars, equivalent to more than three million U.S. dollars at the time. The Gaborone operation followed in 2011 and received a sight from Botswana DTC shortly after.

The current corporate structure dates to 2019, when the original company underwent an amicable split. AD Klein and his children Moshe and Shaya established Grandview Klein as an independent manufacturing operation, incorporating the factories in New York, Johannesburg, Windhoek, and Gaborone, and retaining the De Beers sight allocations in all three African jurisdictions. Julius Klein Diamonds continued separately as a wholesale trading business, led by AD's cousin Martin Klein and his son Mark.

The New York factory remains operational and has long held a reputation for cutting and polishing very large diamonds of five carats and larger. The new Johannesburg facility adds 10,000 square feet and 50 skilled positions to that manufacturing base, anchoring the company's argument that the origin story of a diamond matters as much as its cut grade.