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  2. Herkimer diamond - Wikipedia

    en.wikipedia.org/wiki/Herkimer_diamond

    Inclusions can be found in these crystals that provide clues to the origins of the Herkimer diamonds. Found within the inclusions are solids, liquids (salt water or petroleum), gases (most often carbon dioxide), two- and three-phase inclusions, and negative (uniaxial) crystals. A black hydrocarbon is the most common solid inclusion.

  3. Bristol Diamonds - Wikipedia

    en.wikipedia.org/wiki/Bristol_Diamonds

    The geodes containing the Bristol Diamonds are frequently found in this conglomerate, in the areas of Bridge Valley Road, Leigh Woods, Sea Mills and St Vincent's Rocks. [ 6 ] [ 7 ] [ 8 ] The geodes were formed from quartz, either megaquartz or fibrous quartz, the diamonds themselves resulting from the dissolution of nodules of anhydrite leaving ...

  4. Quartz - Wikipedia

    en.wikipedia.org/wiki/Quartz

    Quartz is, therefore, classified structurally as a framework silicate mineral and compositionally as an oxide mineral. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. [10] Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation ...

  5. Cubic zirconia - Wikipedia

    en.wikipedia.org/wiki/Cubic_zirconia

    Dispersion is very high at 0.058–0.066, exceeding a diamond's 0.044. Cut: Cubic zirconia gemstones can be cut differently than diamonds: The facet edges can be rounded or "smooth". Color: only the rarest of diamonds are truly colorless, most having a tinge of yellow or brown to some extent.

  6. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    Most green quartz (Oro Verde) are also irradiated to achieve the yellow-green color. Diamonds are mainly irradiated to become blue-green or green, although other colors are possible. When light-to-medium-yellow diamonds are treated with gamma rays they may become green; with a high-energy electron beam, blue. [48]

  7. There are over a quadrillion tons of diamonds lurking 100 ...

    www.aol.com/article/news/2018/07/16/scientists...

    That diamond on your wedding ring isn't as rare as you might think, according to new research. There are over a quadrillion tons of diamonds lurking 100 miles below the Earth's surface, according ...

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