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  2. Flame Queen Opal - Wikipedia

    en.wikipedia.org/wiki/Flame_Queen_Opal

    The Flame Queen Opal is perhaps the best-known example of "eye-of-opal", an eye-like effect created when opal in-fills a cavity. [ 1 ] The Flame Queen's flat central raised dome flashes red or gold depending on the angle of view, and is surrounded by a band of deep blue-green, giving the stone an appearance somewhat like that of a fried egg.

  3. Opal - Wikipedia

    en.wikipedia.org/wiki/Opal

    The brightness of the fire in opal ranges on a scale of 1 to 5 (with 5 being the brightest) [14] "Girasol opal" is a term sometimes mistakenly and improperly used to refer to fire opals, as well as a type of transparent to semitransparent type milky quartz from Madagascar which displays an asterism, or star effect when cut properly.

  4. Minecraft: Story Mode - Wikipedia

    en.wikipedia.org/wiki/Minecraft:_Story_Mode

    Minecraft: Story Mode is an episodic point-and-click video game developed and published by Telltale Games, based on Mojang Studios' sandbox video game, Minecraft. The first five episodes were released between October 2015 through March 2016 and an additional three episodes were released as downloadable content (DLC) in mid-2016.

  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. Fire of Australia opal - Wikipedia

    en.wikipedia.org/wiki/Fire_of_Australia_Opal

    The opal is just under 5,000 carats; roughly equivalent in size to two cricket balls. [1] Although rough-cut, it is polished on two sides. [3] Due to the evaporation of an inland sea several million years ago, South Australia is one of the few places on Earth where opals of this size can be created.

  7. Flint - Wikipedia

    en.wikipedia.org/wiki/Flint

    Flint, occasionally flintstone, is a sedimentary cryptocrystalline form of the mineral quartz, [1] [2] categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely used to make stone tools and start fires. Flint occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones.

  8. Limestone - Wikipedia

    en.wikipedia.org/wiki/Limestone

    Dolomite, CaMg(CO 3) 2, is an uncommon mineral in limestone, and siderite or other carbonate minerals are rare. However, the calcite in limestone often contains a few percent of magnesium . Calcite in limestone is divided into low-magnesium and high-magnesium calcite, with the dividing line placed at a composition of 4% magnesium.

  9. Fire coral - Wikipedia

    en.wikipedia.org/wiki/Fire_coral

    While most fire corals are yellow or orange, they can also be found in shades of brown, green, and even blue, providing a vibrant display underwater. [1] Fire coral has several common growth forms; these include branching, plate, and encrusting. Branching fire coral adopts a calcareous structure which branches off into rounded, finger-like tips.