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Emerald is a variety of beryl (thus the structure and properties of this mineral) that may have a red fluorescence under UV-light emerald can be treated with baths oils and colorants (to mask any unevenness and fractures), but also with paints and coatings plastic to continue to talk about the world of dishonest remember that the emerald can also be produced synthetically (with hydrothermal method and the method of crystallization from fondant). Emerald is used for the extraction of beryllium, but if crystallizes as cutting is sold in jewelry and is the queen of green stone (emerald green is a color unattainable) is of considerable importance in the field of collecting mineralogical (but it is difficult find beautiful samples not glued) and recently roots of emerald are also sold in crystal.

What confer the [http://www.gemsforsale.org Emerald] green color are its typical elements such as chromium and vanadium (however, especially chromium). The color of the Emerald there is much to say; laboratories specialists distinguish itself from the Emerald Beryl green, and of course, the emerald is the most valuable (and most expensive) of the green beryl. We say that a gem is called 'green beryl' if its color is 'too light', but there are differences of opinion on the matter. The GIA (Gemology Institute of America) uses of gems compared to lab-graded to determine if the color of a beryl is quite dark and saturated that you can define 'Emerald'. The color which is attributed to the higher value, for an [http://www.gemsforsale.org/category/emerald Emerald gemstone], is the pure green or bluish green, and potentially quite saturated.

The inclusions typically present in Emeralds are mainly due to the fact that in the minerals of beryl are present rills empty; these rills voids are filled by impurities introduced by the coloring elements ( in particular from chromium), or alkali metals (especially lithium, sodium and cesium ) or again, by fluorine. Furthermore, emeralds are formed inside of metamorphic rocks, or rocks that undergo physical transformations due to extreme changes in temperature and pressure; these violent environmental conditions favor further formation of inclusions. As we said, in general, the higher the purity of a gem and the higher its value, but in the case of Emerald, inclusions should not be seen as a defect but as a distinctive feature of the gem. Of course, an emerald eye -clean (no visible inclusions to the naked eye from a distance of 15 cm) would be the top, but it is also nowhere to be found, therefore, included an emerald less will be more expensive than another, that other things being equal, both more inclusive, not only for the general classification , but also for the fact that one generally pure Emerald is very rare. To designate the [http://www.gemsforsale.org/category/emerald inclusions of Emeralds], it also uses the expression "jardin" (garden). The important thing is, however, that these inclusions are not so fine as to create opacity 'misty' inside the gem .

FIELDS: the most important are located in Colombia (in the eastern cordillera of the Andes, emeralds are found in veins of calcite, quartz, dolomite and pyrite), where we have the most beautiful emeralds, Rhodesia (deposit located in the valley of Sandawana), in Brazil (Carnaiba and Sta Terezinha de Goias, you are very beautiful emerald colored but instead of Cr V), Russia (on the Asian side, have a historical interest), Egypt and Austria (they only have a historical value, especially the Egyptian mines that were the first to be exploited); deposits are less important commercially in Pakistan, India, South Africa, Tanzania, Australia, United States, in Italy emeralds were found in the Val d'Ossola (in a pegmatite) and dolomite in the Apuan Alps.

HISTORY: The name comes from the Persian smaragdos = green stone but it is not entirely safe, it is one of the four gems that has characterized most of human history