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  2. List of sapphires by size - Wikipedia

    en.wikipedia.org/wiki/List_of_sapphires_by_size

    It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colors; "parti sapphires" show two or more colors. The only color corundum stone that the term sapphire is not used for is red, which is called a ruby. [1] Pink colored corundum may be either classified as ruby or sapphire depending on locale.

  3. List of fictional elements, materials, isotopes and subatomic ...

    en.wikipedia.org/wiki/List_of_fictional_elements...

    An ancient fireproof alloy made from gold and netherite scraps, which are smelted from debris found in the Nether dimension. When combined with diamond equipment, the metal creates the game's strongest weapons and armor. [53] [54] Nth Metal DC Comics: A Thanagarian alloy used by Hawkman and Hawkwoman. [55]

  4. Yogo sapphire - Wikipedia

    en.wikipedia.org/wiki/Yogo_sapphire

    A 0.37-carat (0.074 g) brilliant cut purple Yogo sapphire. Only about two percent of Yogo sapphires are purple. The Yogo dike is a narrow subvertical sheet-like igneous body. It varies from 2 to 26 feet (0.61 to 7.92 m) thick and extends for 5 miles (8.0 km), striking at an azimuth of 255°.

  5. Sapphire - Wikipedia

    en.wikipedia.org/wiki/Sapphire

    The name sapphire is derived from the Latin word sapphirus, itself from the Greek word sappheiros (σάπφειρος), which referred to lapis lazuli. [2] It is typically blue, but natural "fancy" sapphires also occur in yellow, purple, orange, and green colors; "parti sapphires" show two or more colors.

  6. 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]

  7. Asterism (gemology) - Wikipedia

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

    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] Pliny the Elder's example is consistent with a moonstone; he described it as a colourless stone from India within which was the appearance of a star shining with the light of the ...

  8. Cardinal gem - Wikipedia

    en.wikipedia.org/wiki/Cardinal_gem

    The classification of the cardinal gems dates back to antiquity, and was largely determined by ceremonial or religious use as well as rarity. [1] The term has largely fallen out of use. The five traditional cardinal gems are: amethyst (purple) – Rare and precious in the Old World until large deposits were found in Brazil. diamond (transparent)

  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.