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Now the certificate, really dare not write the source. Because it's impossible to confirm. At present, a lot of data show that some products have such contents, which is the characteristic of local sites. There is no absolute one in the world. For each different rating standard, each country's appraisal agency has their corresponding set of evaluation standards. So no place of origin, first, avoid trouble. Second, avoid being questioned by other appraisal institutions. Gild, for example, said it was an emerald from Colombia. GIA doesn't sell this account. I'm not sure. What do you say? Now the certificate, will only be more and more rigorous. Those engaged in scientific research are paying more and more attention to details. [like my collection! There are three kinds of gild English Certificates: origin report: including color grade and origin (ruby, blue sapphire, emerald, Paraiba tourmaline, spinel, etc. can be issued at present) grading report: including color grade and non origin (emerald, ruby, blue can be issued at present) Sapphire, etc.) identification report: does not include color grade and place of origin (color gem and jade can issue identification report) take guide emerald certificate of origin as an example: whether it is a small gem with less than 1 carat or emerald with more than 1 carat, it can pass the inspection and identification, and even know your emerald color grade, cleanliness grade and place of origin In addition, it also gives a detailed explanation of Wharton green, oil drop effect and small producing area. Certificate number rEach certificate has a unique number, which can be used to query the e-Cert issue date test items item to describe the quantity and appearance of the test items (bare stone, ring, necklace, etc.) speciesgemstone family gemstone variety whether the gemstone is natural or synthetic. For natural gemstones, "nature" will be added before the name of gemstones, and for synthetic gemstones, "synthetic" weight is in CT (carat), 1 carat = 0.2g. If it's jewelry, add * after CT and mark "* indicated by hallmark / client" dimension in comment. If it's impossible to accurately measure the inlay size, add approx cutter cut brilliant, step and modified brilliant ）Shape oval, cushion, round, pear, horse eye, heart, square, kite and octagon are five kinds of shapesColor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor gradecolor- Light - medium - intense - vivid, including verdant green color- Deep the emerald producing areas issued by guide include Columbia, Zambia, Brazil, Afghanistan, Ethiopia, India, etc. Guide gemstone lab: "eye protection atlas" global collection of emerald producing areas guide gemstone lab launched a new emerald service: Columbia small producing area identification service. If it is determined that Colombia is a small producing area, the report will mark the names of mining areas in the producing area column: Columbia (Muzo) (Muzuo), Columbia (Chivor) (Cheval), Columbia (gachala) (gogara). IfThis stone exhibits classic fine green color associated with Muzo Columbia. -No indication of clarity enhancement no indication of clarity enhancement - indication of indicative clarity enhancement very mild indication of clarity enhancement - indication of minor clarity enhancement slight indication of cleanliness optimization - indication of minor to moderate clarity - indication of minor to moderate clarity Enhancement slight to moderate clearness enhancement - indication of modern clarity enhancement moderate clearness enhancement - indication of signSignificant clarity enhancement significant signs of cleanliness optimization information such as Wharton green, vibration brilliance, origin, oil drop effect, etc. are marked at the bottom of the photos on the main page of emerald report, which is concise and clear. The new version of emerald report sample attached pages explain Wharton green, oil drop effect, vibration brilliance, small producing areas, etc. The attached page samples of the new emerald report (including Wharton green, oil drop effect, vibration brilliance and origin) Wharton green is the highest evaluation of emerald color by guide, which refers to the color with high saturation and lightness, representing the fresh and bright green. In the emerald report, the color of Wharton green is classified as vivid green *, and trade name: verdant green is marked at the bottom of the photo. Wharton green will be explained in the form of text and chart in the attached page of the report. The introduction of Wharton green in the attached page of the new edition for the color gemstones with good cutting, clarity and crystal quality, guide will give the evaluation of vibration brilliance. What exactly does vibration brilliance mean? The influencing factors of color gem quality include color, place of origin and optimized treatment. In addition to the above points, transparency, clarity, cutting and the quality of the crystal itself are equally importantYes. There has been a relatively perfect identification and classification system for color grade, optimization processing method and origin identification of color gemstones. In order to evaluate the quality of gemstones more comprehensively and provide consumers with more accurate quality judgment basis, guide laboratory launched the vibration brilliance quality rating. Guide vibration brilliance report sample vibration brilliance means that gemstones have proper cutting, high transparency and clarity. Appropriate cutting, high clarity and transparency can ensure that the light entering the gem can be captured by human eyes as much as possible, so as to show the vivid color. Left "light leakage" caused by cutting, right vibration brilliance vibration brilliance is a separate rating item of color gems, which is not related to other evaluation items (GEM type, color, business name, optimization treatment, etc.). As long as the gem reaches the level of vibration brilliance, guide gem laboratory will give it the evaluation of vibration brilliance. In addition to the notes on the home page of the report, the gems that have won the evaluation of vibration brilliance are also included in the attached page of the report. The introduction of vibration brilliance in the attached page of the new reportDrop effect or butterfly effect is a rare special effect in emeralds, which typically exists in the top quality emeralds in Colombia. From the appearance point of view, the oil drop effect makes emeralds have a velvet texture. Emeralds with oil drop effect are expressed in Spanish gota de aceite (Mariposa) in the report, translated as oil drop effect (butterfly effect). The formation principle of oil drop effect is explained in the appendix of the report. The oil drop effect is due to the columnar structure of microcrystal in emerald. And with the help of micro schematic diagram, the mystery of oil drop effect can be revealed in a simple way for consumers. The attached page of the new report describes the oil drop effect for emeralds, the small producing areas that guide can issue at present include Colombia (Muzuo), Colombia (Cheval), Colombia (gojala), Pakistan (SWAT) and Afghanistan (Panjshir). After the upgrade, a report attachment will be added to the report to introduce the geographical location, history and characteristics of each small producing area. The attached page of the new version of the report describes the emerald small producing area (Muzuo) public account: �� guide, �� guide gemstone Education College; guide assistant micro signal: guild01, please note "Zhihu" Please note that
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