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  2. Benitoite - Wikipedia

    en.wikipedia.org/wiki/Benitoite

    Benitoite (/ b ə ˈ n iː t oʊ aɪ t /) is a rare blue barium titanium cyclosilicate mineral, found in hydrothermally altered serpentinite. It forms in low temperature, high pressure environments typical of subduction zones at convergent plate boundaries. Benitoite fluoresces under short wave ultraviolet light, appearing bright blue to bluish ...

  3. List of U.S. state minerals, rocks, stones and gemstones

    en.wikipedia.org/wiki/List_of_U.S._state...

    In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [ 80 ] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...

  4. Barium - Wikipedia

    en.wikipedia.org/wiki/Barium

    The barium mineral, benitoite (barium titanium silicate), occurs as a very rare blue fluorescent gemstone, and is the official state gem of California.

  5. List of gemstones by species - Wikipedia

    en.wikipedia.org/wiki/List_of_gemstones_by_species

    Actinolite. Nephrite (var.); Adamite; Aegirine; Afghanite; Agrellite; Algodonite; Alunite; Amblygonite; Analcime; Anatase; Andalusite. Chiastolite; Andesine ...

  6. Land of the Lustrous - Wikipedia

    en.wikipedia.org/wiki/Land_of_the_Lustrous

    Land of the Lustrous (Japanese: 宝石の国, Hepburn: Hōseki no Kuni, lit. ' Land of Jewels ') is a Japanese manga series written and illustrated by Haruko Ichikawa [].It was published by Kodansha in Monthly Afternoon magazine from October 2012 to April 2024, with its chapters collected in thirteen tankōbon volumes.

  7. Wikipedia : WikiProject Gemology and Jewelry

    en.wikipedia.org/wiki/Wikipedia:WikiProject...

    The assessment department focuses on assessing the quality of Wikipedia's Gemology and Jewelry articles. While much of the work is done in conjunction with the WP:1.0 program, the article ratings are also used within the project itself to aid in recognising excellent contributions and identifying topics in need of further work.