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revealed discrepancies in the grading of these two diamonds, leading to suspicions that lab workers privy to the situation were complicit. This led to an internal probe being initiated at the GIA, which ran for four months. The probe unearthed
Midtown lab workers' contact with clients, an act which is prohibited by GIA code of ethics. The fraudulent ratings and GIA code of ethics violations were acknowledged by then chairman of the GIA, Ralph Destino. The internal probe ended in October 2005, resulting in the firing of four lab workers and the head of the laboratory.
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343:, the Diamond Grading Report also includes a diamond plot (a graphic representation of the position and type of inclusions present in the diamond). Diamond reports from GIA (as well as other, for-profit sources) are now demanded by most consumers purchasing diamonds over a certain size, typically for over 0.5 carat (100 mg), and almost always for over 1.0 carat (200 mg), and are considered an important tool in guaranteeing that a diamond is accurately represented to a potential buyer.
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payments to the GIA to upgrade the quality of the diamonds submitted for grading which he further sold to the members of Saudi Royal family. Pincione was represented by the famous lawyer Joe
Tacopina. On discovering the fraud the members of Saudi Royal family demanded their money back and refused to do any further business with Pincione.
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The GIA Laboratory provides a variety of gem grading and identification reports for diamonds over 0.15 carats. Diamond grading reports for unmounted natural and laboratory grown diamonds determine their key characteristics: color, clarity, cut and carat weight. GIA issues several types of reports for
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GIA offers several programs and courses online through an interactive eLearning format, and through its 12 campus locations around the world. The institute also offers corporate training programs and works with trade organizations worldwide to provide technical training in gemstones and jewelry.
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Internal investigation was also initiated due to a lawsuit filed in April 2005 by Max
Pincione, a jewelry dealer and former head of retail operations at the jeweler Harry Winston. The lawsuit was filed against Vivid Collection LLC, Moty Spector, Ali Khazeneh and the GIA alleging that Vivid made
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In 2005, an allegation of bribery was made against GIA lab workers, casting doubt on the integrity of diamond grading labs. The accusation involved a dealer who claimed that their lab workers engaged in fraudulent activities related to the grading of two diamonds. Subsequent independent testing
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arts. Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality. The institute does so through research, gem identification, diamond grading services, and a variety of educational programs. Through its
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natural diamonds, the most popular for diamonds over 1 carat being the
Diamond Grading Report. A briefer and less expensive version, called a Diamond Dossier, is often used for diamonds under 1 carat. While both reports contain a number of measurements, including dimensions, proportions,
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Gemological
Library and Information Center, located at GIA's headquarters in Carlsbad, California has a collection of 38,000 books, 700 international magazines and journals, 1,000 videos/DVDs, 80,000 digital images, 300 maps, and approximately 6,000 original jewelry design renderings.
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The
Liddicoat Library is open to the public and the jewelry trade for on-campus research. The library catalog and other resources are available through the website. A reference staff with gemological expertise is on hand to answer questions and may be contacted by e-mail or telephone.
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GIA was founded in the 1920s by Robert M. Shipley. Shipley was a successful jeweler, but realizing his lack of expertise decided to travel to Europe. There, he completed the Great
Britain National Association of Goldsmiths gemological correspondence course. After, Shipley returned to
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GIA is engaged in research to advance the science of gemology. Historically, research has focused on developing methods and technologies to identify and characterize gems. This research has advanced in the ability to differentiate gems and identify simulants, particularly
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GIA also designs and manufactures professional equipment for grading, identifying, and selling diamonds and colored gemstones. These instruments are used to determine the physical and optical properties of gems and analyze their microscopic features.
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The collection contains works published from 1496 to the present, encompassing the history and modern development of gemology. Subjects include natural and synthetic gemstones, gem treatments, jewelry design, manufacturing, and marketing.
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GIA also exists to educate the gem and jewelry industry and the general public through its publications and outreach efforts. Most notable of these efforts is the quarterly publication of the magazine
275:. There, he launched his own preliminary course in gemology on September 16, 1930, to train and certify jewelers. The jewelers he certified would eventually form a national guild of jewelers.
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The first GIA gemological laboratory was established in Los
Angeles in 1931. Shortly thereafter, the institute introduced the "Certified Gemologist" professional designation.
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in the field. The journal includes full-length feature articles, as well as reports on GIA research, abstracts of relevant articles from other journals,
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GIA colored stone identification reports may include a comment about any treatments detected and an opinion of country of origin for
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library and subject experts, GIA acts as a resource of gem and jewelry information for the trade, the public and media outlets.
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Current research at gemological laboratories concerns the development of improved detection techniques for treated and
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The following recognized credentials are attainable upon completion of their corresponding
Diploma Program:
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reports specify the weight, size, shape, color, origin (natural or cultured) and presence of treatments.
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In 1953 the GIA developed its
International Diamond Grading System and the "four Cs" (
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The first GIA instrument, a 10x eye loupe, was introduced in the early 1930s.
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weight) as a standard to compare and evaluate the quality of diamonds.
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Accrediting Commission of the Distance Education and Training Council
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GIA's Carlsbad and New York on-campus courses are accredited by the
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382:(ACCSC). Its Distance Education courses are accredited by the
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Accrediting Commission of Career Schools and Colleges
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Educational organizations based in the United States
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537:"Colored Diamonds Shine at GIA's GemFest in Tokyo"
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689:"Gem Institute Settles Bribe Suit With Broker"
159:21 Gemology & 9 Jewelry Arts Instructors
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657:"Diamond-Grading Laboratory Faces Inquiry"
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16:Research institute in Carlsbad, California
752:"Jewelry Design & Technology Program"
258:Today, the institute is headquartered in
109:Learn how and when to remove this message
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612:"$ 64B diamond industry rocked by fraud"
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122:Gemological Institute of America (GIA)
618:from the original on 23 February 2021
399:Jewelry Design & Technology (JDT)
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477:Daughters of the American Revolution
47:adding citations to reliable sources
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562:"Robert M. Shipley, Founder of GIA"
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539:. Diamonds.net. 14 April 2013.
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638:"GIA's Bribery Scandal"
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402:Graduate Diamonds (GD)
396:Graduate Jeweler (GJ)
814:Carlsbad, California
587:"The GIA Difference"
436:Richard T. Liddicoat
408:Graduate Pearls (GP)
260:Carlsbad, California
225:Carlsbad, California
43:improve this article
693:Wall Street Journal
473:Pamela Rouse Wright
419:Gems & Gemology
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312:synthetic diamonds
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41:Please help
36:verification
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622:20 December
589:. GIA.edu.
564:. Gia.edu.
509:"About GIA"
273:Los Angeles
146:Established
793:Categories
762:2023-06-18
711:2021-01-14
674:2024-07-04
597:2016-11-11
572:2016-11-11
547:2016-11-11
519:2011-04-05
495:References
360:tourmaline
175:California
69:newspapers
701:0099-9660
669:0362-4331
370:Education
316:sapphires
223:based in
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218:nonprofit
99:June 2023
756:Archived
730:Archived
705:Archived
642:Archived
616:Archived
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513:Archived
483:See also
386:(DETC).
352:sapphire
335:weight,
290:Research
231:and the
229:gemology
169:Carlsbad
164:Location
736:6 March
728:. GIA.
614:. CNN.
511:. GIA.
424:journal
356:emerald
341:clarity
266:History
245:clarity
233:jewelry
216:) is a
186:Website
140:Private
83:scholar
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339:, and
320:rubies
251:, and
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364:Pearl
337:color
333:carat
253:carat
249:color
90:JSTOR
76:books
738:2020
697:ISSN
665:ISSN
624:2005
434:The
358:and
348:ruby
303:and
208:The
195:.edu
193:.gia
149:1931
136:Type
62:news
241:cut
214:GIA
191:www
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