Trade representative is carrying out three expedited investigations that might lead to new regulations at the end of this month.
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Miner sells 3.4 million carats for $25.4 million in latest sale of commercial-quality goods.
Revenue up 16% year on year in first half following July purchase of European Boutique.
The latest edition also looks at the Louvre heist, Surat’s diamond-industry crisis, and a shake-up in luxury department stores.
Ring featuring the 6.17-carat stone brings in $2.2 million at Texas sale.
Revenue up 8% year on year in first fiscal half, with American market accounting for 60% of profitability.
Top lot, a ruby and diamond ring, sells for more than double its high estimate.
Testing rules out several likely causes for unusual cloud patterns, prompting need for further investigation.
World’s largest fancy-vivid-orangy-pink diamond sells for $8.8 million.
Only 126 companies shuttered in third quarter, compared to 158 a year earlier.
He is leaving after almost five years with the De Beers company.