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  2. List of sapphires by size - Wikipedia

    en.wikipedia.org/wiki/List_of_sapphires_by_size

    Sapphires are a precious gemstone, a variety of the mineral corundum, consisting of aluminum oxide (α-Al 2 O 3) with trace amounts of elements such as iron, titanium, chromium, copper, or magnesium. It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colors; "parti sapphires" show two or more colors.

  3. Yogo sapphire - Wikipedia

    en.wikipedia.org/wiki/Yogo_sapphire

    An uncut/rough yellow sapphire found at the Spokane Sapphire Mine near Helena, Montana "Yogo sapphire" is the preferred term for gems found in the Yogo Gulch, whereas "Montana sapphire" generally refers to gems found in other Montana locations. [18] More gem-quality sapphires are produced in Montana than anywhere else in North America. [18]

  4. Sapphire - Wikipedia

    en.wikipedia.org/wiki/Sapphire

    An uncut, rough yellow sapphire found at the Spokane Sapphire Mine near Helena, Montana. Sapphire is one of the two gem-varieties of corundum, the other being ruby (defined as corundum in a shade of red). Although blue is the best-known sapphire color, it occurs in other colors, including gray and black, and also can be colorless.

  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

    Even the same named gemstone can occur in many different colors: sapphires show different shades of blue and pink and "fancy sapphires" exhibit a whole range of other colors from yellow to orange-pink, the latter called "padparadscha sapphire". [39] This difference in color is based on the atomic structure of the stone.

  7. Which Berries Are Most Likely To Carry Viruses? A Food ... - AOL

    www.aol.com/lifestyle/berries-most-likely-carry...

    In case you’re not familiar with these viruses, norovirus causes vomiting and diarrhea (sometimes at the same time), while hepatitis A impacts the liver and can cause diarrhea, fatigue, joint ...

  8. Category:Individual sapphires - Wikipedia

    en.wikipedia.org/wiki/Category:Individual_sapphires

    Stuart Sapphire This page was last edited on 23 December 2015, at 17:39 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 ...

  9. Sapphire (color) - Wikipedia

    en.wikipedia.org/wiki/Sapphire_(color)

    Sapphire is a saturated shade of blue, referring to the gemstone of the same name. Sapphire gems most commonly occur in a range of blue shades , although they can come in many different colors. Other names for variations of the color sapphire are blue sapphire or sapphire blue , shown below.

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