aquamarine stone

As of 1999[update], the world's largest known naturally occurring crystal of any mineral is a crystal of beryl from Malakialina, Madagascar, 18 m (59 ft) long and 3.5 m (11 ft) in diameter, and weighing 380,000 kg (840,000 lb). Nowadays the greener colors are far less … [15][16] Both golden beryl and heliodor are used as gems. Normally Beryl forms hexagonal columns but can also occur in massive habits. The pink color of morganite is attributed to Mn2+ ions. It can be routinely heat treated to remove patches of yellow and is occasionally treated by irradiation to improve its color.

[41] Like emerald and unlike most other varieties of beryl, red beryl is usually highly included. Aquamarines is also present in the state of Wyoming, aquamarine has been discovered in the Big Horn Mountains, near Powder River Pass. Gilson's emeralds are usually grown on natural colorless beryl seeds which become coated on both sides.

[27] The green color of emeralds is widely attributed to presence of Cr3+ ions.

Increasing alkali content within the silicate ring channels causes increases to the refractive indices and birefringence.[11]. Decoloration of maxixe by light or heat thus may be due to the charge transfer between Fe3+ and Fe2+. The mines of Colombia, Zambia, Madagascar, Malawi, Tanzania and Kenya also produce aquamarine. [37][38] The old synonym "bixbite" is deprecated from the CIBJO, because of the risk of confusion with the mineral bixbyite (both were named after the mineralogist Maynard Bixby).

Pure beryl is colorless, but it is frequently tinted by impurities; possible colors are green, blue, yellow, and red (the rarest).

Aquamarine is mined in a variety of locations around the world. [32][33], The gem value of goshenite is relatively low. Unlike emerald, golden beryl generally has very few flaws.

[34] It was also known, with other gemstone minerals, such as tourmaline and kunzite, at Pala, California. It occurs at most localities which yield ordinary beryl. Its color fades to white when exposed to sunlight or is subjected to heat treatment, though the color returns with irradiation.

Maxixe is commonly found in the country of Madagascar.

Unlike emerald, the deep green variety of beryl, high-clarity, fracture-free aquamarine is abundant and more affordable.High-clarity, fracture-free stones are also … ", "Red beryl value, price, and jewelry information", https://en.wikipedia.org/w/index.php?title=Beryl&oldid=983584748#Aquamarine_and_maxixe, Short description is different from Wikidata, All Wikipedia articles written in American English, Articles containing Old French (842-ca. [15][22] Most emeralds are highly included, so their brittleness (resistance to breakage) is classified as generally poor. For the given name, see, Gemmological classifications by E. Ya.

The pale blue color of aquamarine is attributed to Fe2+. Some of the rarest emeralds come from the two main emerald belts in the Eastern Ranges of the Colombian Andes: Muzo and Coscuez west of the Altiplano Cundiboyacense, and Chivor and Somondoco to the east. March’s birthstone was also thought to enhance the happiness of marriages. [12] Care must thus be used when mining, handling, and refining these gems. Probably the largest cut golden beryl is the flawless 2054-carat stone on display in the Hall of Gems, Washington, D.C., United States. The best gems combine high clarity with limpid transparency and blue to slightly greenish blue hues. The gem-gravel placer deposits of Sri Lanka contain aquamarine. The name "beryl" is derived (via Latin: beryllus, Old French: beryl, and Middle English: beril) from Greek βήρυλλος beryllos which referred to a "precious blue-green color-of-sea-water stone";[1] from Prakrit verulia, veluriya ("beryl"), from Sanskrit वैडूर्य vaiḍūrya "brought from Vidûra" (originally lapis lazuli)[7] which is ultimately of Dravidian origin, maybe from the name of Belur or "Velur" a town in Karnataka, southern India.

[8] The term was later adopted for the mineral beryl more exclusively. Beryl of various colors is found most commonly in granitic pegmatites, but also occurs in mica schists in the Ural Mountains, and limestone in Colombia. After cleansing and activating your Aquamarine gem and programming it with an intention, place the stone in a bowl of purified water, preferably alkaline.

The first commercially successful emerald synthesis process was that of Carroll Chatham. However, Africa is the continent which produces most Aquamarine currently seen in the market. Some fine quality aquamarine gemstones have been found in Mount Antero and White Mountain in this rugged state. In 1998, emeralds were discovered in Yukon. [42] It is formed by crystallizing under low pressure and high temperature from a pneumatolytic phase along fractures or within near-surface miarolitic cavities of the rhyolite. [34], On October 7, 1989, one of the largest gem morganite specimens ever uncovered, eventually called "The Rose of Maine", was found at the Bennett Quarry in Buckfield, Maine, US. The modern English word "emerald" comes via Middle English Emeraude, imported from modern French via Old French Ésmeraude and Medieval Latin Esmaraldus, from Latin smaragdus, from Greek σμάραγδος smaragdos meaning ‘green gem’, from Hebrew ברקת bareket (one of the twelve stones in the Hoshen pectoral pendant of the Kohen HaGadol), meaning ‘lightning flash’, referring to ‘emerald’, relating to Akkadian baraqtu, meaning ‘emerald’, and possibly relating to the Sanskrit word मरकत marakata, meaning ‘green’. Green-yellow beryl, such as that occurring in Brazil, is sometimes called chrysolite aquamarine. Beryl can also be black in color. Kievlenko (1980), updated, "Concise International Chemical Assessment Document 32, Beryllium and Beryllium compounds", "The deep blue Maxixe-type color center in beryl", "The Dom Pedro aquamarine's long and winding path to the Smithsonian", "Goshenite, the colorless variety of beryl", "Gem named for Morgan; Newly discovered pink beryl is to be known as Morganite", "What gemstone is found in Utah that is rarer than diamond and more valuable than gold? [23] The Semitic word אזמרגד izmargad, meaning ‘emerald’, is a back-loan, deriving from Greek smaragdos. Like many beryls, aquamarine forms large crystals suitable for sizable fashioned gems and carvings. The most famous location is the state of Minas Gerais in Brazil where the renowned “Santa Maria” deep blues are mined. Aquamarine is best known as a highly transparent blue stone. As mentioned at the start of this article, ancient civilisations regarded aquamarine crystal as a treasure belonging to the mythical mermaids of the deep – so you can imagine just how mystical and steeped in legend this stone … Aquamarine: Transparent and Translucent. [6] These channels permit a variety of ions, neutral atoms, and molecules to be incorporated into the crystal thus disrupting the overall charge of the crystal permitting further substitutions in Aluminium, Silicon, and Beryllium sites in the crystal structure. Beryl (/ˈbɛrəl/ BERR-əl) is a mineral composed of beryllium aluminium cyclosilicate with the chemical formula Be3Al2Si6O18. New England's pegmatites have produced some of the largest beryls found, including one massive crystal from the Bumpus Quarry in Albany, Maine with dimensions 5.5 by 1.2 m (18.0 by 3.9 ft) with a mass of around 18 metric tons; it is New Hampshire's state mineral. [10], Beryl belongs to the hexagonal crystal system. [40] Red beryl has been known to be confused with pezzottaite, a caesium analog of beryl, that has been found in Madagascar and more recently Afghanistan; cut gems of the two varieties can be distinguished from their difference in refractive index, and rough crystals can be easily distinguished by differing crystal systems (pezzottaite trigonal, red beryl hexagonal). Aquamarine can also be found in other African countries such as Zambia, Kenya, Tanzania and on the gemstone island itself, Madagascar.

Beryl is a beryllium compound that is a known carcinogen with acute toxic effects leading to pneumonitis when inhaled.

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