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  2. Birthstone - Wikipedia

    en.wikipedia.org/wiki/Birthstone

    In 1912, to standardize birthstones, the (American) National Association of Jewelers (now called Jewelers of America) met in Kansas and officially adopted a list. [1]: 317 The Jewelry Industry Council of America updated the list in 1952 [3]: 311 by adding Alexandrite for June, citrine for November and pink tourmaline for October. They also ...

  3. Woman finds that her fake diamond ring from 30 years ago is ...

    www.aol.com/news/2017-05-22-woman-finds-that-her...

    The ring is now in the possession of Sotheby's London, where it will be auctioned on June 7 and is estimated to go for up to $455,000. Woman finds that her fake diamond ring from 30 years ago is ...

  4. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    The socio-economic dynamics of the gemstone industry are shaped by market forces and consumer preferences and typically go undiscussed. Changes in demand and prices can significantly affect the livelihoods of those involved in gemstone mining and trade, particularly in developing countries where the industry serves as a crucial source of income ...

  5. Diamond simulant - Wikipedia

    en.wikipedia.org/wiki/Diamond_simulant

    Titanite or sphene is also seen in antique jewelry; it is typically some shade of chartreuse and has a luster, RI (1.885–2.050), and dispersion (0.051) high enough to be mistaken for diamond, yet it is anisotropic (a high birefringence of 0.105–0.135) and soft (hardness 5.5).

  6. 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]

  7. Authentic Brands Group - Wikipedia

    en.wikipedia.org/wiki/Authentic_Brands_Group

    Authentic Brands Group LLC (ABG) is an American brand management company headquartered in New York City. Its holdings include various apparel, athletics, and entertainment brands, which it partners with other companies to license and merchandise . [ 2 ]

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