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  2. 12 Valuable Swarovski Crystal Figurines That Cost a ... - AOL

    www.aol.com/12-valuable-swarovski-crystal...

    Highest listing price on eBay: $2,500 The Swarovski Wild Horses figurine, part of their Numbered Limited Editions, is a stunning piece made from clear crystal with matte manes and tails.

  3. 5D optical data storage - Wikipedia

    en.wikipedia.org/wiki/5D_optical_data_storage

    5D optical data storage (also branded as Superman memory crystal, [1] a reference to the Kryptonian memory crystals from the Superman franchise) is an experimental nanostructured glass for permanently recording digital data using a femtosecond laser writing process. [2]

  4. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    Group of precious and semiprecious stones—both uncut and faceted—including (clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone (also called a fine gem , jewel , precious stone , semiprecious stone , or simply gem ) is a piece of mineral crystal which, when cut or ...

  5. Crystal radio - Wikipedia

    en.wikipedia.org/wiki/Crystal_radio

    A crystal detector includes a crystal, usually a thin wire or metal probe that contacts the crystal, and the stand or enclosure that holds those components in place. The most common crystal used is a small piece of galena ; pyrite was also often used, as it was a more easily adjusted and stable mineral, and quite sufficient for urban signal ...

  6. 5 Enchanting Antiques That Caught Our Eye at the Winter Show

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    At the beginning of every year since the 1950s, New York's old guard has scurried dutifully to the Park Avenue Armory for a smattering of some of the finest antiques on this side of the Atlantic.

  7. Lead glass - Wikipedia

    en.wikipedia.org/wiki/Lead_glass

    Cut glass wine glass made of lead glass. Lead glass, commonly called crystal, is a variety of glass in which lead replaces the calcium content of a typical potash glass. [1] Lead glass contains typically 18–40% (by mass) lead(II) oxide (PbO), while modern lead crystal, historically also known as flint glass due to the original silica source, contains a minimum of 24% PbO. [2]

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