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Sapphire is the birthstone for September and the gem of the 45th anniversary. ... "World's largest blue star sapphire 'found in Sri Lanka' ". BBC News
The Star of Adam is an oval-shaped blue star sapphire, currently the largest star sapphire in the world. [1] [2] [3] It weighs 1,404.49 carats (280.898 g; 9.9084 oz). [4]Prior to its discovery in 2015, the Black Star of Queensland, weighing 733 carats (146.6 g), was the largest star sapphire gem in the world.
Today, it is still regarded as the world’s largest gem-quality engraved sapphire. [3] The Millennium Sapphire was certified in its rough form by the Asian Institute of Gemological Sciences and the Gemological Institute of America. The Gubelin Lab of Switzerland recently certified the sapphire in its finished, carved form at 61,500 carats ...
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 Rajawaka in the Balangoda district, and it was revealed in December 2021. Estimated value is USD 150 million (2024) [3]
At 1404.49 carats, The Star of Adam is the largest known blue star sapphire. The gem was mined in the city of Ratnapura, southern Sri Lanka. [17] The Black Star of Queensland, the second largest star sapphire in the world, weighs 733 carats. [18]
Serendipity Sapphire is the world's largest star sapphire cluster, and it weighs 510 kilograms (2,600,000 carats). [1] It was found in Kahawatte, in the Ratnapura District , Sri Lanka, in July 2021. Its worth is estimated to be up to US$100 million.
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The Logan Sapphire brooch, National Museum of Natural History, Washington, D.C. The Logan Sapphire is a 422.98-carat (84.596 g) sapphire from Sri Lanka.One of the largest blue faceted sapphires in the world, it was owned by Victor Sassoon and then purchased by M. Robert Guggenheim as a gift for his wife, Rebecca Pollard Guggenheim, who donated the sapphire to the Smithsonian Institution in 1960.