Country overtook Botswana in 2023.
Goods came from three Angolan mines, including first-timer Sangamina.
Falling prices could take synthetics out of competition with natural, but could also turn sentiment against all diamonds.
Miner will deliver the batch, which includes gem-quality rough in various colors and sizes, by end of year.
High gold prices weaken consumer sentiment and lead to revenue decrease of 27%.
Two-phase operation set to yield up to 314,000 carats and revenue of $159.8 million.
Two prominent companies tied for first place while one received no votes at all.
Individual intentionally made erroneous accounting entries for delivery expenses, company says.
Higher-quality goods performed very well, while the miner held back other items.
Ring will lead auction house’s December 13 sale in New York, where it is expected to bring in up to $850,000.
High gold prices increased costs and impacted sales.