The document discusses recent trends in the diamond and gemstone markets based on a De Beers study and auction results from a recent Sotheby's sale. It notes that worldwide diamond jewelry sales increased 7% to $79 billion last year, with online sales making up 17% of the US market. It also reports that a 17.16ct sapphire called the "Imperial Kashmir" sold at the Sotheby's auction for a record $4.01 million or $236,404 per carat, breaking the previous record. An 8.41ct vivid purple-pink diamond achieved $17.7 million, the highest price ever paid for a vivid pink diamond at auction.