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2. Gems of Sri Lanka - Wikipedia

   en.wikipedia.org/wiki/Gems_of_Sri_Lanka

   Sri Lanka was affectionately known as Ratna-Dweepa which means Gem Island. The name is a reflection of its natural wealth. Marco Polo wrote that the island had the best sapphires, topazes, amethysts, and other gems in the world. [1] Ptolemy, the 2nd century astronomer recorded that beryl and sapphire were

3. List of sapphires by size - Wikipedia

   en.wikipedia.org/wiki/List_of_sapphires_by_size

   Sri Lanka 478.68 carats (95.736 g) Cushion Blue Anonymous owner [6] Logan Sapphire: Sri Lanka 422.99 carats (84.598 g) Cushion Blue National Museum of Natural History, Washington [7] Star of Asia: Burma 330 carats (66 g) Star Blue National Museum of Natural History, Washington [8] Star of Artaban: Sri Lanka 287 carats (57.4 g) Star Blue-violet

4. Logan Sapphire - Wikipedia

   en.wikipedia.org/wiki/Logan_sapphire

   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.

5. Sapphire - Wikipedia

   en.wikipedia.org/wiki/Sapphire

   Sri Lanka 392.52 carats Cushion Blue Anonymous owner Logan Sapphire [82] Sri Lanka 422.99 carats Cushion Blue National Museum of Natural History, Washington Queen Marie of Romania [83] Sri Lanka 478.68 carats Cushion Blue Anonymous owner Star of Adam [17] Sri Lanka, 2015 1404.49 carats Star Blue Anonymous owner Star of Bombay: Sri Lanka 182 ...

6. The Star of Adam - Wikipedia

   en.wikipedia.org/wiki/The_Star_of_Adam

   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.

7. Queen of Asia (gem) - Wikipedia

   en.wikipedia.org/wiki/Queen_of_Asia_(gem)

   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]