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The transparent red spinels were called spinel-rubies [14] or balas rubies. [15] In the past, before the arrival of modern science, spinels and rubies were equally known as rubies. After the 18th century, the word ruby was only used for the red gem variety of the mineral corundum, and the word spinel came to be used. [16] "
The Spinel of the Great Imperial Crown (Russian: Шпинель Большой императорской короны) or Menshikov Ruby [1] (Russian: Рубин Меншикова) is a historical gemstone, a red spinel which tops the Great Imperial Crown of Russia from the 18th century to the present day.
The assembled piece included a red spinel of 107-carat (21.4 g; 0.75 oz) carats shaped as a dragon breathing "covetous flames," as well as 83 red-painted diamonds and 112 yellow-painted diamonds to suggest a fleece shape. [18] The piece fell into disuse after the death of Louis XV. The diamond became the property of his grandson Louis XVI.
In the Imperial State Crown are Cullinan II (317 carats (63 g)), the Stuart Sapphire, St Edward's Sapphire, and the Black Prince's Ruby – a large red spinel. The Koh-i-Noor diamond (105 carats (21 g)) was acquired by Queen Victoria from the Sikh Empire and has featured on three consort crowns. A small number of disused objects at the Tower ...
This page was last edited on 25 December 2024, at 14:17 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Actinolite. Nephrite (var.); Adamite; Aegirine; Afghanite; Agrellite; Algodonite; Alunite; Amblygonite; Analcime; Anatase; Andalusite. Chiastolite; Andesine ...
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