emerald

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emerald,

the green variety of berylberyl
, mineral, a silicate of beryllium and aluminum, Be3Al2Si6O18, extremely hard, occurring in hexagonal crystals that may be of enormous size and are usually white, yellow, green, blue, or colorless.
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, of which aquamarine is the blue variety. Chemically, it is a beryllium-aluminum silicate whose color is due to small quantities of chromium compounds. The emerald was highly esteemed in antiquity; the stones were used for ornaments in early Egypt where some of the first emeralds were mined. The finest emeralds are found in South America in Colombia, where they have been mined for over 400 years. The gem was a favorite in pre-Columbian Mexico and Peru, where it was cut in intricate designs. The treasure taken back to Spain by early explorers included emeralds. Good emeralds are the most highly valued of gem stones. Zambia and Brazil are also significant sources of the natural stones. Synthetic emeralds are also manufactured in Germany, France, and the United States. The Oriental emerald, a different gem, is the transparent green variety of corundumcorundum
, mineral, aluminum oxide, Al2O3. The clear varieties are used as gems and the opaque as abrasive materials. Corundum occurs in crystals of the hexagonal system and in masses. It is transparent to opaque and has a vitreous to adamantine luster.
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Emerald

 

a mineral that is a transparent variety of beryl tinged with an admixture of Crj03 to a deep grass-green color. Emeralds are found in crystals and their concretions, usually intergrown in micaceous rock, quartz, or feldspar. The crystals, measuring 2–5 cm by 0.5–2 cm, rarely larger, are fractured. The larger deposits are connected with zones of the contact alteration of amphibolites, magnesial schist, and serpentinites by granitic pegmatites. Emeralds are also found in quartz feldspar veins and in altered schistose-carbonate rocks. Deposits are rare and are mainly in the USSR (Urals), Republic of South Africa (Transvaal), and Colombia (Muzo). Emeralds are highly valued as gems; those that are large (more than 5 carats), flawless, and have a deep, rich color are considered to be more valuable than diamonds.

Synthetic emeralds (so-called igmeralds) are made, but their crystals are often fissured and no larger than 0.5 by 3 cm.

emerald

[′em·rəld]
(mineralogy)
Al2(Be3Si6O18) A brilliant-green to grass-green gem variety of beryl that crystallizes in the hexagonal system; green color is caused by varying amounts of chromium. Also known as smaragd.

emerald

May. [Am. Gem Symbolism: Kunz, 319–320]

emerald

relieves diseases of the eye. [Gem Symbolism: Kunz, 370]
See: Healing

emerald

1. a green transparent variety of beryl: highly valued as a gem
2. 
a. the clear green colour of an emerald
b. (as adjective): an emerald carpet

Emerald

An object-oriented distributed programming language and environment developed at the University of Washington in the early 1980s. Emeral was the successor to EPL. It is strongly typed and uses signatures and prototypes rather than inheritance.

["Distribution and Abstract Types in Emerald", A. Black et al, IEEE Trans Soft Eng SE-13(1):65-76 (Jan 1987)].
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8220;You'd be surprised by the quality of our emerald green artificial plants and our always competitive pricing,” Smith concluded.
At Emerald Green, Glenwood wavered a little from its usual formula on the mix of apartment layouts, a move meant to accommodate the breed of younger renters it expects will be attracted to the developing area.
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In a shop known for eye-catching new trends, the Xpressions bracelets stand out with their glittery, sparkles-filled, base bracelets, interchangeable letter and design charms and one of the happiest color palates imaginable (Mediterranean-blue, emerald green, purple, candy-pink, sunflower-yellow and black-on-white).
Her bright emerald green blouse and matching cardigan pumped up the style for her workday at Sovereign Bank, paired with a classic black dress pant.
2 million cake pops emerald green and 2012 sales of pure peppermint extract increased more than 50 percent in the weeks leading up to St.
Like the old standby and emerald green Pittosporum Tobira 'Wheeler's Dwarf,' karo contrasts well with red or bronze New Zealand flax (Phormium species) or any other shrub or perennial with vividly colored foliage.
Located by a quiet lake, surrounded by a canopied forest of trees, emerald green lawns and flowering shrubs, the 33,000-square-foot spa mansion exudes style, serenity and a luxuriously comfortable French country atmosphere.
Let's face it, it's a hard task to be a glamorous gran when you're an octogenarian but Her Majesty did look resplendent in a cloak of emerald green and a silk dress of St Patrick's green and blue and certainly stood out as she descended the steps of her plane.

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