Topic
diamonds
4 stories related to this topic, newest first.
Semaforworld38 days ago
Angola Seeks Mining Investment Instead of Export Bans
Angola will not impose export quotas or bans on mining companies, a senior minerals minister said on May 15, 2026. The country aims to attract private investment to build domestic processing facilities. This approach differs from export restrictions enacted by DR Congo on cobalt…
foxnews.comworld39 days ago
5.5-Carat Blue-Green Diamond Sells for $17.3 Million at Geneva Auction
A 5.5-carat triangular-cut diamond described as the largest fancy vivid blue-green diamond known to exist sold for more than 13.5 million Swiss francs at Christie’s in Geneva on Wednesday. The price more than doubled the amount the same stone fetched at auction in 2014. The aucti…
thehindu.comscience47 days agoUpdated
Nanodiamonds as Small as 4 Nanometres Exhibit 30% Lower Stiffness Than Larger Diamonds
Researchers compressed individual diamonds between diamond-tipped cylinders and found that stiffness fell as diameters shrank from 12 to 4 nanometres. Computer simulations linked the change to a high ratio of surface atoms to core atoms and weak chemical bonds between the layers.
Inside Climate Newsfinance48 days ago
Arctic Canadian Diamond Company Files for Creditor Protection Citing 74% Diamond Price Drop
The operator of Canada's Ekati Diamond Mine sought court protection this week after diamond prices fell 74 percent, threatening operations and hundreds of jobs. The company received $175 million in federal loans last year but faces $655 million in total debts. The filing highligh…
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