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  2. Prasiolite - Wikipedia

    en.wikipedia.org/wiki/Prasiolite

    Prasiolite (also known as green quartz, green amethyst or vermarine) is a green variety of quartz. Since 1950, almost all natural prasiolite has come from a small Brazilian mine, [ citation needed ] but it has also been mined in the Lower Silesia region of Poland .

  3. Critical green inclusion - Wikipedia

    en.wikipedia.org/wiki/Critical_green_inclusion

    Critical green inclusions, also known as green neutrophilic inclusions and informally, death crystals or crystals of death, [1] [2] are amorphous blue-green cytoplasmic inclusions found in neutrophils and occasionally in monocytes. They appear brightly coloured and refractile when stained with Wright-Giemsa stain.

  4. Accidentally exposed yellowish-green crystals reveal ‘mind ...

    www.aol.com/nasa-curiosity-rover-makes-most...

    And it all began when the 1-ton rover happened to drive over a rock and crack it open, revealing yellowish-green crystals never spotted before on the red planet.

  5. Malachite - Wikipedia

    en.wikipedia.org/wiki/Malachite

    Malachite is a copper carbonate hydroxide mineral, with the formula Cu 2 CO 3 (OH) 2.This opaque, green-banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses, in fractures and deep, underground spaces, where the water table and hydrothermal fluids provide the means for chemical precipitation.

  6. Moldavite - Wikipedia

    en.wikipedia.org/wiki/Moldavite

    Moldavite (Czech: vltavín) is a forest green, olive green or blue greenish vitreous silica projectile glass formed by a meteorite impact in southern Germany (Nördlinger Ries Crater) [3] that occurred about 15 million years ago. [4] It is a type of tektite and a gemstone. [5]

  7. Peridot - Wikipedia

    en.wikipedia.org/wiki/Peridot

    Peridot is one of the few gemstones that occur in only one color: an olive-green. The intensity and tint of the green, however, depends on the percentage of iron in the crystal structure, so the color of individual peridot gems can vary from yellow, to olive, to brownish-green. In rare cases, peridot may have a medium-dark toned, pure green ...

  8. Diopside - Wikipedia

    en.wikipedia.org/wiki/Diopside

    Green diopside crystals included within a white feldspar matrix are also sold as gemstones, usually as beads or cabochons. This stone is often marketed as 'green spot jasper' or green spot stone'. Violane is a manganese -rich variety of diopside, violet to light blue in color.

  9. Vivianite - Wikipedia

    en.wikipedia.org/wiki/Vivianite

    Crystals in shades of pink, green, greyish blue, purple and purplish black, as well as colorless. The unique deep purple color of some Blackbird mine specimens is characteristic of the locality. Some single crystals have both purple and green zones. Vivianite crystals from the Blackbird Mine are usually elongated and blade-like.

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