The Emerald Stone

Emerald is a variety of mineral beryl (Be 3 for 2 (Net 3) 6) the green color of trace amounts of chromium and sometimes vanadium. [Beryl has a hardness of 7.5 to 8 on a scale of 10 points Moss to the hardness of metals. To a large extent from most of the emeralds and Cmmelthzh durability of resistance (to break) and are classified, so the poor in general. Meanings
The word "Emerald" is derived (via Old French: Esmeraude and Middle English: Emeraude), from Vulgar Latin: Esmaralda / Esmaraldus, variant of Latin Smaragdus, which originated in Greek: smaragdos (σμάραγδος; "jewel green"); it either the original source אזמרגד izmargad Hebrew word meaning "emerald" or "green" [3] or Sanskrit मरग्दम् marakata word that means "green". It can also be related to the name Barack Semitic word (בָּרָק; bright; "Lightning" and "Shine") (see Hebrew: bareqeth ברקת and Arabic: lightning flash "Lightning"). It is the same source for the names of the Persian zomorrod emerald (), Turkish (zümrüt), Sanskrit (मरग्दम् maragdam), Russian (изумруд; izumrud) [4] and Armenian zmruxt.
 Characteristics determine the value Emerald cut
Emerald, like all colored gemstones, are classified using four basic criteria, and four of Jim taste; color, cut, clarity and Crystal. C last, crystal is used simply as a synonym that begins with C for transparency or what gemologists call diaphaneity. Before the 20 century, and used jewelry term water as in the "gem of the finest water" [5] to express a combination of two qualities, colors and crystal. Usually, in the grades of colored gemstones, color is much more important criterion. However, in the grading of emerald, crystal is considered in second place. Both are necessary conditions. The fine must be emerald and has not only a pure verdant green hue as described below, but also a high degree of transparency that is the highest gem
America in the 1960s changed the jewelry industry in the definition of 'Emerald' to include carrying vanadium beryl and emerald green. As a result, vanadium and Emerald Emerald purchased in the United States is not recognized as such in the United Kingdom and Europe. In America, and the distinction between traditional and new type of vanadium Emerald is reflected in many cases the use of terms' Colombian emeralds like that. Colors
Color, scientifically speaking is divided into three components: hue, saturation and tone. And shapes found in yellow and blue adjacent to the green on the spectral color wheel, is the natural forms found in the secondary emerald. Emerald occurs in forms ranging from the yellow and green to green, blue. And the primary hue must, of course, be green. Is a medium dark in tone is one of the only emerald gems. Precious stones known as light relief types and Beryl Green. In addition, you must be a bright color (live). Ramadi is the rate of saturation regular or mask found in emerald. Green and gray color is dull green. Clarity
Emerald tends to be listing numerous and break the surface fissures. Unlike diamond, where the lens is a 10X, zoom used standard, for clarity grade and the Emerald is the degree of the eye. Thus, if it has no inclusions visible to the Emerald Eye (assuming normal visual acuity) is free of defects. Lack of surface rupture is extremely rare and thus break almost all the Emerald deal stones that "drunk", to enhance the clarity and clear. Eye clean stones from the neighborhood of the green primary hue (as described above) with no more than 15% of any hue or a combination of secondary (either blue or yellow) of the dark tone is medium at the highest prices. This crystal relative non-uniformity makes it Emerald more likely than other precious stones to be cut in cabochons, faceted shapes instead of. Treatment
The top most part of the Emerald Jeweler participation process, in order to improve their clarity. Rice, oil, and a similar refractive index, often used in this generally accepted practice. Other liquids, including synthetic oils and polymers with refractive indexes close to the Emerald, such as Opticon are also used. In the United States Federal Trade Commission requires disclosure of such treatment when it sold the emerald is the treatment. The use of conventional oil and acceptable to a large extent from the gem trade. Other treatments, for example, use green colored oil, are not acceptable in this trade. Society and a common language lab recently for the classification and clarity of emeralds. Classification of precious stones and on a fourth step, nothing, simple, medium and high-booster. Note that these categories do not reflect the levels of promotion and visibility. Jewel and phased nothing on the scale of promotion may appear impurities are still visible. Labs tend to apply these standards differently. Some laboratories in the gem of the mere existence of oil or polymers are increased. Others may ignore the impact of oil if the presence of such material is not materially improve the look of the precious stones.
Given that a majority of all the Emerald deal wide as described above, and the fact that the two stones that look identical in terms of quality may actually be too far away in the level of treatment, a consumer considering the purchase of expensive emerald and do well to insist on a report of respectful treatment Plant a gem. All other factors being equal, high-quality level of the Emerald gradual strengthening the moderates and should cost 40-50% less than the stones are identical phased nothing. To Spain and gold necklace emerald displayed in the Victoria and Albert Museum.
Antiquity were mined in the Emerald by the Egyptians, Pakistan and Austria.

 Synthetic Emerald Emerald hexagonal structure shows
Emerald is a rare and valuable gems, and as such, it has provided an incentive for developing synthetic emeralds. Both water and the flow of growth and production of synthetic materials, developed a method to produce hyper emerald beryl is colorless. Was the first commercially successful emerald synthesis process and that Chatham Carroll. Chatham Emerald because you do not have any water, and contains tracks for vanadate, molybdenum and vanadium, a process flow of lithium vanadate probably involved. Other major producer of emeralds and the flow was Pierre Gilson Sr., which has been on the market since 1964. Are usually grown on the Emerald Gilson colorless beryl seeds which become natural coated on both sides. Growth occurs at a rate of 1 mm per month for seven months, the growth of a typical operation producing emerald crystals of 7 mm thickness. Gelson sale of produce tested for the Japanese company in the 1980s, but production stopped since then, so it was not Chatham, after the quake, which struck the city of San Francisco 1989. 

Hydrothermal synthetic emerald was attributed to the international community Farben, Nacken, Tairus, and others, but the first satisfactory commercial product was that of Johann Lechleitner of Innsbruck, Austria, which appeared on the market in the 1960s. In the beginning, these stones, which are sold under the names "honorary" and "Symeralds", and was also grown a thin layer of emerald on top of colorless beryl natural stones. Although not much is known about the original process, and assumes that the emerald Leichleitner and grown in acidic conditions. [Citation needed], 1965-1970, later in the Linde Division of Union Carbide produced completely synthetic emeralds by hydrothermal synthesis. According to the patents of their own, acidic conditions necessary to prevent the chromium (which is used as the basis for coloring) of the calf. Also, it is important that the nutrients that contain silicon away from the other components to prevent the nucleation and growth of crystals are limited to seeds. Growth takes place through the deployment of response, with the assistance of pregnancy. Largest producer of emeralds vents today is Tairus in Russia. We have succeeded to compile the Emerald that are similar to the chemical composition and emeralds in the deposits of alkali in Colombia, and are therefore called "Colombian emeralds construction" or "Tairus Created Emerald" shine in ultraviolet radiation and is considered a test of complementary when making a decision against the synthetic report of the natural, and many, but not all thing, natural emerald is inactive for the UV light. Synthetic fibers and many of the UV radiation is also inactive. 

Often referred synthetic emeralds "to create", and chemical composition and jewelry is the same as natural counterparts. In the United States Federal Trade Commission (FTC) and the very strict regulations regarding what can and can not be called "stone" synthetic. Federal Trade Commission says: "§ 23.23 (c) It is unfair or deceptive to use the word" laboratory-grown "," laboratory-created "," [name of manufacturer], the creation of "or" artificial "with the name of any natural stone to describe any product unless not the manufacture of these products and the industry is essentially the same physical and chemical properties as a visual stone name.
The inclusion of such fine veil common in the flow of synthetic emerald grown. Emerald in different cultures, and the Emerald Lore And Emerald Gachala is one of the largest gem emeralds in the world, 858 carats (172 grams). This stone was found in 1967 in San Juan de Vega mine in Los Angeles Gachalá and Colombia. And housed in the National Museum of Natural History at the Smithsonian Institution in Washington, DC
Emerald is the traditional, as is the jewel in May, as well as the traditional gemstone for the astrological signs of Taurus, Cancer, and sometimes Gemini. One of the most bizarre tales of the Emerald was by the historian in the Horn of 16 Brantôme, who referred to many of the Emerald and impressive Spaniards under Cortez could return to Europe from Latin America. On one of the most prominent and Emerald Cortez, said he was in the text engraved between the North Atlantic Treaty Organization Mulierum Mayor Wall rexit others ("Among those born of women there hath not created the largest"; man atheist ten, 11) which refers to John the Baptist. Considered Brantôme drilling this nature sacrilegious pretty simple product, is this behavior a cause for Lkhosarp Cortez Pearl extremely valuable (which is devoted to the work of a beautiful and incomparable pearl) and even the death of King Charles IX of France who died shortly after. [
In some cultures, and emerald is the traditional gift for 55 wedding anniversary. Is also used as a wedding anniversary stone and 35 20. 

And authorized the King James Version of the Bible, in Exodus 28:18 and 39:11, and lists of "emerald" as one of the gems in the breastplate of the Jewish priests, but the modern consensus is that this is probably a misunderstanding. (See Hoshen).
Ireland is often referred to, especially in America, as the "Emerald Isle"
For. Frank Baum's Wizard of Oz from the superb, the city where the rules are the wizard of the Emerald, and thus is called the Emerald City. Book in the series is named after the sixth.