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It represents the most expensive jewel sold at auction in ... A 20.52-carat Internally D Color Flawless diamond ring, selling for $1,950,623. 3. Lot 640. A 7.58-carat Burmese ruby and diamond ...

The auction house sold a 28.86-carat diamond for $2,115,000 in an online auction — the most expensive ... that the diamond, a rare Type 11A, is classified as D-color, meaning it's one of the ...