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  2. List of gemstones by species - Wikipedia

    en.wikipedia.org/wiki/List_of_gemstones_by_species

    Gemstones of the World revised 5th edition, 2013 by Walter Schumann ISBN 978-1454909538 Smithsonian Handbook: Gemstones by Cally Hall, 2nd ed. 2002 ISBN 978-0789489852 hide

  3. List of individual gemstones - Wikipedia

    en.wikipedia.org/wiki/List_of_individual_gemstones

    Bahia Emerald [2]; Carolina Emperor, [3] [4] 310 carats uncut, 64.8 carats cut; discovered in the United States in 2009, resides in the North Carolina Museum of Natural Sciences, Raleigh, NC, US

  4. 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 ...

  5. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    The traditional classification in the West, which goes back to the ancient Greeks, begins with a distinction between precious and semi-precious; similar distinctions are made in other cultures. In modern use, the precious stones are emerald, ruby, sapphire and diamond, with all other gemstones being semi-precious. [9]

  6. Category:Gemstones - Wikipedia

    en.wikipedia.org/wiki/Category:Gemstones

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

  7. Images of gemstones under a microscope are stunning - AOL

    www.aol.com/news/2015-01-22-images-of-gemstones...

    Sanchez directs light through fiber optics then takes the photo with multiple different points of focus. The final image is a compilation of 20 to 60 individual pictures.

  8. Chrysanthemum stone - Wikipedia

    en.wikipedia.org/wiki/Chrysanthemum_stone

    Chrysanthemum stone, sometimes called "flower stone," is a stone "flower" produced millions of years ago due to geological movement and natural formation in the rock. [1] The stone's pattern resembles the chrysanthemum flower. The flower is milky white and grain is clear.

  9. Hardstone carving - Wikipedia

    en.wikipedia.org/wiki/Hardstone_carving

    Hardstone carving, in art history and archaeology, is the artistic carving of semi-precious stones (and sometimes gemstones), such as jade, rock crystal (clear quartz), agate, onyx, jasper, serpentinite, or carnelian, and for objects made in this way. [1] [2] Normally the objects are small, and the category overlaps with both jewellery and ...

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