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Ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, alongside amethyst, sapphire, emerald, and diamond. [3]
A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide).Other varieties of gem-quality corundum are called sapphires.Ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond. [1]
Cultures in these regions developed more complex methods of jewellery creation. The Andes is the origin of hot working metallurgy in the Americas and consequently the region has the longest history of work in materials such as silver, platinum and gold. Metallurgy began in Mesoamerica during the Termainal Classic era, likely arriving from ...
Ruby was the first gemstone to be synthesized by Auguste Verneuil with his development of the flame-fusion process in 1902. [59] Synthetic corundum continues to be made typically by flame-fusion as it is most cost-effective, but can also be produced through flux growth and hydrothermal growth.
The Sunrise Ruby. The Sunrise Ruby [1] [2] [3] has been the world's most expensive ruby, most expensive coloured gemstone, and most expensive gemstone other than a diamond [2] [3] [4] until the discovery of the Estrela de Fura. Originally mined in Myanmar, its current name is derived from a poem of the same name, written by the 13th-century ...
The ruby slippers worn in the 1939 film The Wizard of Oz, and once stolen from the Judy Garland Museum in Grand Rapids, Minnesota in 2005, auctioned for over $30 million on Dec. 7, 2024.
Auguste Verneuil A sketch of an early furnace used by Verneuil to synthesise rubies using the Verneuil process. Auguste Victor Louis Verneuil ( French: [vɛʁnœj] ; 3 November 1856 – 27 April 1913) was a French chemist who invented the first commercially viable process for the manufacture of synthetic gemstones . [ 1 ]
One of Verneuil's sources of inspiration for developing his own method was the appearance of synthetic rubies sold by an unknown Genevan merchant in 1880. These "Geneva rubies" were dismissed as artificial at the time, but are now believed to be the first rubies produced by flame fusion, predating Verneuil's work on the process by 20 years.
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