ECONOMYNEXT – The largest natural corundum ever recorded in Sri Lanka, which could also be the largest in the world, has attracted interest from potential buyers from China and the US, the 310 ...

Sri Lankan authorities on Sunday put on show what they said was the world’s largest natural corundum blue sapphire, weighing 310 kilograms (683 pounds), which was found in a gem pit about three months ...

Sri Lankan authorities put on show what they said was the world's largest natural corundum blue sapphire. Weighing more than 680 pounds, it was found in a gem pit ...

“At the Corundum Hill Mine (near Highlands), various shades of ruby gem corundum have been found,” the U.S. Geological Survey reported in 1906. However, though the gems were similar to the red rubies ...

Colombo, Jan 5 (AdaDerana) – A Dubai-based company has opted to purchase the world's largest single natural corundum as a single crystal (Blue Sapphire) in the world, which was found in Sri Lanka last ...