A blue diamond lived up to the hype at auction this week.
The 5.7-carat fancy intense stone, mounted as part of a diamond ring, hammered down for $8.8 million during Christie’s Magnificent Jewels sale. That price was more than the diamond’s pre-auction high estimate and makes the jewel the second most expensive sold at auction globally this year.
“Today’s sale in New York was a testament to the vibrant market for jewelry of the highest caliber with singular…

