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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. List of Texas state symbols - Wikipedia

   en.wikipedia.org/wiki/List_of_Texas_state_symbols

   Texas blue topaz: 1969: Gemstone cut: Lone Star Cut [8] Grass: Sideoats grama (Bouteloua curtipendula) 1971: Handgun: Colt Walker [1] 2021: Insect: Monarch butterfly [1] (Danaus plexippus) 1995: Music: Western swing [1] Musical instrument: Acoustic guitar [1] Nut: Pecan (carya illinoinensis) 1919: Pepper (native) Chiltepin (Capsicum annuum var ...

4. 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.

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. 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 ...

7. List of gemstones by species - Wikipedia

   en.wikipedia.org/wiki/List_of_gemstones_by_species

   Calcite. Manganoan calcite (var.); Caledonite; Canasite; Cancrinite. Vishnevite; Carletonite; Carnallite; Cassiterite; Catapleiite; Cavansite; Celestite; Ceruleite ...