We cut a 428 carat lab-grown sapphire with our 60,000 PSI waterjet. It was the hardest thing we’ve ever cut! Why Canadians boycotting U.S. wine is crushing the American industry Archaeologists ...

The top lot of the sale was an 11.87-carat unheated Burmese sapphire that achieved $660,900. The transparent cushion-cut gem sold for three times its pre-sale estimate, the auction house said.

The turn-of-the-century Tiffany & Co. ring is centered by an oval-cut sapphire the auction house describes as “rare quality” and a “deep and rich blue.” It’s flanked by European-cut ...