The surge in demand may have been sparked by interest in the Duchess of Cambridge’s engagement ring, formerly owned by Princess Diana, which features a large Ceylon Blue sapphire. The National ...

The 12-carat oval Ceylon blue sapphire has reignited demand for sapphires, a gem Sri Lanka is known for. Blue star sapphires appear opaque under normal circumstances, however, when placed under a ...

The surge in demand may have been sparked by interest in the Duchess of Cambridge’s engagement ring, formerly owned by Princess Diana, which features a large Ceylon Blue sapphire.

That twelve carat Ceylon sapphire surrounded ... the agreement was sealed with an oval shaped sapphire. And Princess Anne, too, wore the precious blue stone when she announced her engagement ...