DiamondBuzz
De Beers and Botswana finally sign the deal on sales, mining licenses
De Beers and the Botswana government announced they had finally signed the long-delayed agreements on sales, mining licenses and a package of measures to boost the country’s economy. The agreement is key to Botswana’s economy – representing around 80 per cent of all exports – and to De Beers, which relies on the country for 70 per cent its diamond supply.As widely expected, the agreement grants mining licenses to Debswana – the 50/50 joint venture between De Beers and Botswana – until July 2054.
The old agreement expired in 2021. Negotiations to renew it began back in 2018 but Covid and a series of other delays led to it being extended instead.Both sides reached a provisional agreement in June 2023 and signed an outline agreement – or head of terms – in October.But the previous government, under President Mokgweetsi Masisi, failed to actually finalize the deal. It then lost the general election last November, in a major upset, and it was left to his successor, Duma Boko get the deal across the line.
It also increases the share of Debswana’s rough production that goes to Okavango, the government’s rough diamond sales company.Okavango, which currently sells 25 per cent, will will sell 30 per cent for the first five years and 40 per cent for the second five years. There is provision for a 50/50 split if the agreement is extended by a further five years In addition, De Beers agrees to an upfront investment of around $75m in a Diamonds for Development Fund, plus further contributions based on Debswana’s performance.
DiamondBuzz
CVD Synthetic Fashioned To Imitate A Rough Natural Diamond
The Near-Colorless Stone Is Believed To Be The First Time Creators Of A Synthetic Chemical Vapor Deposition (CVD) Diamond Have Shaped It To Resemble A Rough Diamond
The 6.87-carat near-colorless CVD diamond was shaped to resemble a natural rough octahedral crystal but showed distinct synthetic features under microscopic and spectroscopic analysis.GIA’s tests confirmed the stone’s synthetic origin, noting polishing marks, facet junction roughness, and luminescence patterns inconsistent with natural diamonds.
No evidence currently suggests widespread substitution of synthetics for rough natural diamonds, but existing detection tools could be adapted if such cases increase.
The near-colorless stone is believed to be the first time creators of a synthetic chemical vapor deposition (CVD) diamond have shaped it to resemble a rough diamond, according to an article in the spring issue of the institute’s Gems & Gemology quarterly journal.
Upon investigation with the use of raman spectroscopy, the results confirmed that the material was a diamond, with its near-octahedral shape similar to that of a natural rough crystal. Further analysis showed that it was not a true octahedron, as only one set of opposing faces was parallel. Microscopic observation under differential interference contrast revealed extremely flat faces marked mainly by parallel polishing lines, unlike the growth steps and trigons typically seen on natural octahedral faces. The facet junctions were extremely rough, possibly due to measures taken to improve the color, after which the main faces appear to have been repolished, the institute explained.
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