Trade representative is carrying out three expedited investigations that might lead to new regulations at the end of this month.
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Figure down 2.5% from 2024 holiday season so far, but projections show post-Christmas surge.
The 2.50-carat stone’s phosphorescence levels are more common in lab-grown, institute says.
Piece brings in $368,800, surpassing its high estimate.
NRF foresees 158.9 million US consumers buying gifts the final weekend before Christmas.
Trade group to honor Tiffany & Co., jeweler CD Peacock, and industry figure Anna Martin.
Lot had estimate of $1.5 million at December 11 sale, which totaled $11.8 million.
Revenue up 0.6% from October and 4.5% year on year, reports NRF.
Country is already suffering economically and highly dependent on diamond sector, report says.
Leading piece sells for $776,490 at London auction.
Lab to show source countries for peridot, opal, jade and demantoid garnet.