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The metamorphic types of gems constitute 90% of the gem deposits in Sri Lanka. It has been estimated that nearly 25% of the total land area of Sri Lanka is potentially gem-bearing, making Sri Lanka one of the countries with the highest density of gem deposits compared to its landmass. [3] [4]
Geuda (ගෙවුඩ, pronounced gay-yoo-dah [needs IPA]) is a form of the mineral corundum, or sapphire, found primarily in Sri Lanka. Around 70%-80% of gems mined in Sri Lanka belong to geuda varieties. Because of its semitransparent and milky appearance due to rutile inclusions, these stones have little value as gemstones in their natural ...
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
Pages in category "Gems of Sri Lanka" ... Star of India (gem) This page was last edited on 2 January 2018, at 17:00 (UTC). Text is available under the Creative ...
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.
The type locality is Eheliyagoda, Ratnapura District, Sabaragamuwa Province, Sri Lanka, [2] where it was first described in 1955 by F. L. D. Ekanayake, a Sri Lankan scientist, [5] [6] and it is named after him. [5] In Sri Lanka the mineral specimens occur as detrital pebbles.
Sri Lanka: Queen of Asia is the world's largest natural corundum blue sapphire. [1] It weighs 310 kilograms (1,600,000 carats). [2] ... List of individual gemstones ...
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.