The second-largest diamond ever excavated has been ... that has struggled to compete with lab-grown stones. Prices of synthetic diamonds have plummeted in recent years, eating into the market ...

Diamond sales from the Debswana joint venture between De Beers, the biggest diamond mining company, and Botswana fell 46% ...

But while people may think that synthetic diamonds are the more ethical route ... tank American Enterprise Institute (AEI) as "the biggest marketing scam in history orchestrated by the most ...