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  2. Jeremejevite - Wikipedia

    en.wikipedia.org/wiki/Jeremejevite

    Jeremejevite is an aluminium borate mineral with variable fluoride and hydroxide ions. Its chemical formula is Al 6 B 5 O 15 (F,OH) 3. It is considered as one of the rarest, thus one of the most expensive stones. For nearly a century, it was considered as one of the rarest gemstones in the world. [5] [better source needed]

  3. List of minerals recognized by the International ...

    en.wikipedia.org/wiki/List_of_minerals...

    This list includes those recognised minerals beginning with the letter J.The International Mineralogical Association is the international group that recognises new minerals and new mineral names; however, minerals discovered before 1959 did not go through the official naming procedure, although some minerals published previously have been either confirmed or discredited since that date.

  4. List of minerals - Wikipedia

    en.wikipedia.org/wiki/List_of_minerals

    Amethyst crystals – a purple quartz Apophyllite crystals sitting right beside a cluster of peachy bowtie stilbite Aquamarine variety of beryl with tourmaline on orthoclase Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals Austinite from the Ojuela Mine, Mapimí, Durango, Mexico Ametrine ...

  5. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    A chemical powder which corresponds to the desired gemstone is passed through this flames. ... Jeremejevite was discovered in 1883 in Russia and ... The mineral was ...

  6. Jade - Wikipedia

    en.wikipedia.org/wiki/Jade

    Main jade producing countries. Jade is an umbrella term for two different types of decorative rocks used for jewelry or ornaments.Jade is often referred to by either of two different silicate mineral names: nephrite (a silicate of calcium and magnesium in the amphibole group of minerals), or jadeite (a silicate of sodium and aluminum in the pyroxene group of minerals). [1]

  7. Taaffeite - Wikipedia

    en.wikipedia.org/wiki/Taaffeite

    Taaffeite (/ ˈ t ɑː f aɪ t /; BeMgAl 4 O 8) is a mineral, named after its discoverer Richard Taaffe (1898–1967) who found the first sample, a cut and polished gem, in October 1945 in a jeweler's shop in Dublin, Ireland. [4] [5] As such, it is the only gemstone to have been initially identified from a faceted stone.

  8. Jarosite - Wikipedia

    en.wikipedia.org/wiki/Jarosite

    The mineral and the flower have the same color. Mysterious spheres of clay, 1.5 to 5 inches (40 to 125 mm) in diameter and covered with jarosite, have been found beneath the Temple of the Feathered Serpent , an ancient six-level stepped pyramid 30 miles (50 km) from Mexico City.

  9. Carnallite - Wikipedia

    en.wikipedia.org/wiki/Carnallite

    Carnallite is an uncommon double chloride mineral that only forms under specific environmental conditions in an evaporating sea or sedimentary basin. It is mined for both potassium and magnesium and occurs in the evaporite deposits of Carlsbad, New Mexico ; the Paradox Basin in Colorado and Utah ; Stassfurt , Germany ; the Perm Basin , Russia ...