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  2. Ruby - Wikipedia

    en.wikipedia.org/wiki/Ruby

    Synthetic rubies have technological uses as well as gemological ones. Rods of synthetic ruby are used to make ruby lasers and masers. The first working laser was made by Theodore H. Maiman in 1960. [33] Maiman used a solid-state light-pumped synthetic ruby to produce red laser light at a wavelength of 694 nanometers (nm). Ruby lasers are still ...

  3. Jewel bearing - Wikipedia

    en.wikipedia.org/wiki/Jewel_bearing

    Originally natural jewels were used, such as diamond, sapphire, ruby, and garnet. In 1902, a process to make synthetic sapphire and ruby (crystalline aluminium oxide, also known as corundum) was invented by Auguste Verneuil, making jewelled bearings much cheaper. Today most jewelled bearings are synthetic ruby or sapphire.

  4. Verneuil method - Wikipedia

    en.wikipedia.org/wiki/Verneuil_method

    By 1877, chemist Edmond Frémy had devised an effective method for commercial ruby manufacture by using molten baths of alumina, yielding the first gemstone-quality synthetic stones. The Parisian chemist Auguste Verneuil collaborated with Frémy on developing the method, but soon went on to independently develop the flame fusion process, which ...

  5. Corundum - Wikipedia

    en.wikipedia.org/wiki/Corundum

    Corundum is a crystalline form of aluminium oxide (Al 2 O 3) typically containing traces of iron, titanium, vanadium, and chromium. [3] [4] It is a rock-forming mineral.It is a naturally transparent material, but can have different colors depending on the presence of transition metal impurities in its crystalline structure. [7]

  6. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    Synthetic corundum includes ruby (red variation) and sapphire (other color variations), both of which are considered highly desired and valued. [58] Ruby was the first gemstone to be synthesized by Auguste Verneuil with his development of the flame-fusion process in 1902. [59]

  7. Talk:Ruby laser - Wikipedia

    en.wikipedia.org/wiki/Talk:Ruby_laser

    At first, ruby lasers used natural rubies, making the commercial and scientific use of lasers a very expense venture. However, the application of lasers become more viable with the invention of the synthetic ruby by John M. Burdick in 1949 (U.S. Patent 2488507), working for Linde Air Products, which was at that time a division of Union Carbide.

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