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  2. Topaz - Wikipedia

    en.wikipedia.org/wiki/Topaz

    Topaz is a silicate mineral made of aluminum and fluorine with the chemical formula Al 2 Si O 4 (F, OH) 2.It is used as a gemstone in jewelry and other adornments. Common topaz in its natural state is colorless, though trace element impurities can make it pale blue or golden brown to yellow-orange. [7]

  3. Gemstone Meanings: Power and Significance of the 25 Most ...

    www.aol.com/gemstone-meanings-power-significance...

    Topaz “Coming in a variety of colors, from blue to yellow to white, topaz is symbolically associated with peace, self-worth, and self-confidence,” Salzer says.

  4. Gemstone irradiation - Wikipedia

    en.wikipedia.org/wiki/Gemstone_irradiation

    The most commonly irradiated gemstone is topaz, which usually becomes blue after the process. [3] Intensely blue topaz does not exist in nature and is the result of artificial irradiation. [ 25 ] According to the American Gem Trade Association, approximately 30 million carats (6,000 kg or 13,000 lb) of topaz are irradiated every year globally ...

  5. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    Virtually all blue topaz, both the lighter and the darker blue shades such as "London" blue, has been irradiated to change the color from white to blue. Most green quartz (Oro Verde) are also irradiated to achieve the yellow-green color. Diamonds are mainly irradiated to become blue-green or green, although other colors are possible.

  6. Gemstones in the Bible - Wikipedia

    en.wikipedia.org/wiki/Gemstones_in_the_Bible

    Topaz, or ancient chrysolite, is an octangular prism of an orange-yellow colour; it is composed of alumina, silica, hydrofluoric acid, and iron. it is found in Ceylon, Arabia, and Egypt. Several species were reported to exist (Pliny, "Hist. nat.", XXXVII, xlv) and during the Middle Ages it was believed to possess the power of relieving anxiety ...

  7. Luminous gemstones - Wikipedia

    en.wikipedia.org/wiki/Luminous_gemstones

    According to Strabo, "The topaz is a transparent stone sparkling with a golden lustre, which, however, is not easy to be distinguished in the day-time, on account of the brightness of the surrounding light, but at night the stones are visible to those who collect them.

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