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  2. List of gemstones by species - Wikipedia

    en.wikipedia.org/wiki/List_of_gemstones_by_species

    Download as PDF; Printable version; In other projects Wikimedia Commons; Wikidata item; ... Rock crystal (var.) Shocked quartz (var.) Smoky quartz (var.) Quartzite; R–Z

  3. List of minerals - Wikipedia

    en.wikipedia.org/wiki/List_of_minerals

    Amethyst crystals – a purple quartz Apophyllite crystals sitting right beside a cluster of peachy bowtie stilbite Aquamarine variety of beryl with tourmaline on orthoclase Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals Austinite from the Ojuela Mine, Mapimí, Durango, Mexico Ametrine ...

  4. Category:Gemstones - Wikipedia

    en.wikipedia.org/wiki/Category:Gemstones

    Download QR code; Print/export Download as PDF; Printable version; In other projects ... Metal-coated crystal; Moissanite; Moldavite; Moonstone (gemstone)

  5. Aquamarine (gem) - Wikipedia

    en.wikipedia.org/wiki/Aquamarine_(gem)

    Aquamarine is a pale-blue to light-green variety of the beryl family, [2] with its name relating to water and sea. [3] The color of aquamarine can be changed by heat, with a goal to enhance its physical appearance (though this practice is frowned upon by collectors and jewelers). [4]

  6. Crystal healing - Wikipedia

    en.wikipedia.org/wiki/Crystal_healing

    Crystal healing is a pseudoscientific alternative-medicine practice that uses semiprecious stones and crystals such as quartz, agate, amethyst or opal. Despite the common use of the term "crystal", many popular stones used in crystal healing, such as obsidian, are not technically crystals .

  7. For the Very First Time, We've Actually Filmed Sound Waves ...

    www.aol.com/lifestyle/very-first-time-weve...

    Scientists successfully filmed sound waves in a diamond crystal structure for the first time ever using an X-ray free-electron laser (XFEL).

  8. Crystal - Wikipedia

    en.wikipedia.org/wiki/Crystal

    A crystal's crystallographic forms are sets of possible faces of the crystal that are related by one of the symmetries of the crystal. For example, crystals of galena often take the shape of cubes, and the six faces of the cube belong to a crystallographic form that displays one of the symmetries of the isometric crystal system. Galena also ...

  9. Emerald - Wikipedia

    en.wikipedia.org/wiki/Emerald

    180,000 carats, crystals in host rock 752 lb (341 kg) Los Angeles County Sheriff's Department [46] Carolina Emperor [47] [48] United States, 2009 310 carats uncut, 64.8 carats cut North Carolina Museum of Natural Sciences, Raleigh Chalk Emerald: Colombia 38.40 carats cut, then recut to 37.82 carats National Museum of Natural History, Washington

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