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  2. Dendrite (crystal) - Wikipedia

    en.wikipedia.org/wiki/Dendrite_(crystal)

    The first dendritic patterns were discovered in palaeontology and are often mistaken for fossils because of their appearance. The first theory for the creation of these patterns was published by Nash and Glicksman in 1974, they used a very mathematical method and derived a non-linear integro-differential equation for a classical needle growth.

  3. Opal - Wikipedia

    en.wikipedia.org/wiki/Opal

    A Peruvian opal (also called blue opal) is a semi-opaque to opaque blue-green stone found in Peru, which is often cut to include the matrix in the more opaque stones. It does not display a play of color. Blue opal also comes from Oregon and Idaho in the Owyhee region, as well as from Nevada around the Virgin Valley. [17] Opal is also formed by ...

  4. Halley's Comet Opal - Wikipedia

    en.wikipedia.org/wiki/Halley's_Comet_Opal

    The Halley's Comet Opal is a very fine specimen, with few flaws or blemishes and a large green and orange 1.6 cm (0.63 in) thick color bar which goes through the opal. Formed about 20 million years ago, it is an example of a nobby, which is a natural lump-shaped opal found only at Lightning Ridge. [2] As of 2006 it was for sale at $1.2 million. [3]

  5. World's most expensive opal literally glows in the dark - AOL

    www.aol.com/news/2015-08-13-world-s-most...

    In fact, as it gets darker around the opal, the opal appears ever more vibrant. The stone's vivid and sparkly nature is in stark contrast to Coober Pedy, Australia where it was discovered.

  6. Biogenic silica - Wikipedia

    en.wikipedia.org/wiki/Biogenic_silica

    Biogenic silica (bSi), also referred to as opal, biogenic opal, or amorphous opaline silica, forms one of the most widespread biogenic minerals. For example, microscopic particles of silica called phytoliths can be found in grasses and other plants. Silica is an amorphous metalloid oxide formed by complex inorganic polymerization processes.

  7. Eagles speak out on Philadelphia plane crash just days before ...

    www.aol.com/eagles-speak-philadelphia-plane...

    A detailed view of the Philadelphia Eagles logo at midfield prior to the game against the Dallas Cowboys at Lincoln Financial Field on November 1, 2020 in Philadelphia, Pennsylvania.

  8. The Secret Ingredient for the Best Roasted Brussels Sprouts - AOL

    www.aol.com/secret-ingredient-best-roasted...

    How To Make My Honey Mustard Brussels Sprouts. For 3 to 4 servings, you’ll need: 1 pound Brussels sprouts. 1 1/2 tablespoons extra-virgin olive oil

  9. Opalite - Wikipedia

    en.wikipedia.org/wiki/Opalite

    Opalite is a trade name for synthetic opalescent glass and various opal and moonstone simulants. Other names for this glass product include argenon, sea opal, opal moonstone, and other similar names. [1] [2] It is also used to promote impure varieties of variously colored common opal. [1]

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