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Eternity ring. An eternity ring, also known as an infinity ring, is a woman's ring [1] comprising a band of precious metal (usually gold) set with a continuous line of identically cut gemstones (usually diamonds) [2] to symbolize never-ending love, usually given by a spouse to their wife on the occasion of a significant anniversary, [citation needed] typically after five years of marriage.
The Sunrise Ruby greatly surpassed the previous record holder, the Graff ruby ring, which sold for US$8.6 million in November 2014. [4] [12] Its record-setting price has been attributed to the rapid increase in prices for coloured gemstones and public auctions, with figures often "rivaling the performance of the much-sought-after colored ...
FURA Gems was established in 2017 by Dev Shetty with a focus on increasing the supply of ethically sourced color gemstones with traceability of the mine origin to end-consumers. [5] [1] The company's name is derived from an ancient Colombian legend about Fura and Tena, two human figures created by the Muisca god Are. [6]
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]
Whether a gemstone is a natural stone or synthetic, the chemical, physical, and optical characteristics are the same: They are composed of the same mineral and are colored by the same trace materials, have the same hardness and density and strength, and show the same color spectrum, refractive index, and birefringence (if any). Lab-created ...
Virtually all gemstones that show the "alexandrite effect" (color change or 'metamerism') show similar absorption/transmission features in the visible spectrum. This is an absorption band in the yellow (~590 nm), along with valleys of transmission in the blue-green and red.