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2. Ruby - Wikipedia

   en.wikipedia.org/wiki/Ruby

   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]

3. Rosser Reeves Ruby - Wikipedia

   en.wikipedia.org/wiki/Rosser_Reeves_Ruby

   At the time the ruby then weighed just over 140 carats (28 g), but was very heavily scratched, and a few carats were removed in the re-polishing. The re-polishing also helped to center the stone's star. Articles in the New York World-Telegram and The Sun in 1953 mentioned this fabulous gemstone. The Rosser Reeves Ruby is on display at the ...

4. List of rubies by size - Wikipedia

   en.wikipedia.org/wiki/List_of_rubies_by_size

   National Museum of Natural History [3] DeLong Star Ruby: Burma: 1930 100.32 carats (20.064 g) American Museum of Natural History [4] Garrard's Red Ruby Burma: 40.63 carats (8.126 g) [5] Sunrise Ruby: 25.59 carats (5.118 g) [6] Carmen Lúcia Ruby: Burma: 1930s 23.1 carats (4.62 g) National Museum of Natural History [7] Elizabeth Taylor Ruby

5. Asterism (gemology) - Wikipedia

   en.wikipedia.org/wiki/Asterism_(gemology)

   The star-effect may be also caused by the inclusions of hematite. In black star sapphire hematite needles formed parallel to the faces of the second order prism produce asterism. Some star sapphires from Thailand contain both hematite and rutile needles forming a 12-ray star. [3] Star-stones were formerly regarded with much superstition. [1]

6. Estrela de Fura - Wikipedia

   en.wikipedia.org/wiki/Estrela_de_Fura

   The ruby was discovered by Dubai-based FURA Gems in its mine in Mozambique on July 21, 2022. [2] [3] [4]Before its unveiling and cutting, Daniel Nyfeler, managing director of Gübelin Gem Lab, stated: "the Estrela de Fura ruby is likely to yield an intense, saturated red colour once fully and properly faceted with adequate proportions, is relatively free of eye-visible inclusions.

7. Allison and Roberto Mignone Halls of Gems and Minerals

   en.wikipedia.org/wiki/Allison_and_Roberto_Mignon...

   The DeLong Star Ruby - a 100-carat stone discovered in Burma in the 1930s. The Patricia Emerald - a 12-sided 632-carat emerald found in Colombia in 1920, unique because it was never cut into a gem shape. [2] The Brazilian Princess Topaz - a light blue gemstone weighing 9.5 pounds, considered to be the largest cut gemstone in the world. [15]