Queen of Asia is the world's largest natural corundum blue sapphire.[1] It weighs 310 kilograms (1,600,000 carats).[2] It was found in Batugedara in the Ratnapura district, and it was revealed in December 2021. Estimated value is USD 100 million.[3]
In May 2024, the gem was offered 250 million sterling pounds in offer, and was negotiating with the Sri Lankan owner.