| 词条 | Logan Sapphire |
| 释义 |
The Logan Sapphire is a flawless specimen from Sri Lanka, a cushion-cut stone which possesses a rich deep blue color and is the second largest (blue) sapphire known, weighing 422.99 carats (84.6 g). The stone, roughly the size of an egg, is one of the world's largest and most famous sapphires. The Logan Sapphire is named after Mrs. Polly Logan, who donated the gemstone to the Smithsonian Institution in 1960.[1] The Logan Sapphire is set in a brooch surrounded by 20 round brilliant cut diamonds weighing, in total, 16 carats (3.2 g). It is currently on display at the National Museum of Natural History in Washington, D.C., alongside the Bismarck Sapphire Necklace and the Hall Sapphire and Diamond Necklace.[2][3] References1. ^{{cite web |title=Logan Sapphire [G3703] |publisher=Smithsonian National Museum of Natural History |url=http://geogallery.si.edu/index.php/10002687/logan-sapphire |accessdate=20 July 2016}} 2. ^The Logan Sapphire Brooch 3. ^Corundum (variety: Sapphire) External links
4 : Individual brooches|Individual sapphires|Jewellery in the collection of the Smithsonian Institution|Gems of Sri Lanka |
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