GIA does not permit anyone outside of the Institute to make use of its trademarks and logos without explicit permission from the Institute. GIA does not object to your making descriptive, non-trademark use of its name but not logos , provided that the use is not likely to cause confusion, mistake, deception, or create the false impression that you or any other non-GIA entity or its product is affiliated with, connected to, associated with, approved by, or sponsored by GIA.
GIA's names and logos, like those of most organizations, are valid and protected trademarks and service marks and as such may not be used in your advertising except as described here.
Copyrights and Trademarks
Copyrighted works of GIA authorship are owned or licensed by GIA and may not be copied, reproduced, transmitted, displayed, performed, distributed, rented, sublicensed, altered, stored for subsequent use or otherwise used in whole or in part in any manner without GIA's prior express written consent. Anyone is free to make truthful and factual textual references to GIA and its education, research, laboratory services, academic credentials and grading and identification reports, provided such references are not likely to cause confusion, mistake, or deception, or imply an affiliation with, connection to, or association between GIA and the organization making the references or its products.
It is permissible for a company to state that some of the gems it sells have been sent to GIA for identification or grading. Companies may also state that GIA reports are available for customers' inspection prior to purchase and given to them upon purchase, provided, of course, that such statements are in no manner false, misleading, or deceptive. The following are examples of unacceptable usage which have appeared, either in newspapers, in telephone yellow pages advertising text, on stationery letterhead, or on business cards:.
- Diamond Quality Factors.
- Copyrights and Trademarks!
- Sua durante um mês (Desejo) (Portuguese Edition)!
- In den Armen des Elfen - III zu Im Schatten der Elfen (German Edition)?
It is incorrect to state that students, graduates, their businesses, or particular gemstones are "certified" by GIA. GIA does not certify anyone or anything. Neither a student nor a graduate who has been awarded a certificate or diploma, nor a gem which has been graded or identified by GIA has been "certified" by GIA.
Gemological Institute of America
It must represent the composition and content of the actual report. It may not be edited or altered in any manner. The image must represent the composition and content of the actual report. It is acceptable to promote that an individual or organization is using master color comparison diamonds graded by GIA for color grading.
Usage guidelines apply to all current and former students of the Gemological Institute of America, Inc. Academic credentials earned at GIA are respected by gem and jewelry professionals around the world. They are the internationally recognized symbol of the highest standard of education in the fields of gemology, jewelry manufacturing arts and jewelry business. It is appropriate and customary for recipients of GIA diplomas to signal their achievement by appending the relevant academic designation to the end of their name.
A second grader then takes the diamond through the same process, once again identifying each clarity characteristic, evaluating the polish, symmetry, culet, and girdle, and checking for the presence of any treatments. This grader then submits a second independent opinion of the diamond. Depending on the diamond's carat weight, quality, and the degree of agreement between graders, a senior gemologist may review the previous grading information and render a third opinion. Grading results are finalized once there is sufficient agreement on grades.
Next, the diamond's color is compared to a set of master stones. The master stone set is a row of stones laid out from D to Z, representing the standard for each color grade. Each stone represents the least amount of color in its range.
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By moving the submitted diamond step by step down the line of master stones, the grader is able to determine where the submitted diamond falls in the color grade spectrum. The grader next observes the diamond under special UV lighting to see if the diamond exhibits signs of fluorescence ; and if so, to what degree. Every diamond is judged by several graders to insure that accurate color and fluorescence grades are assigned. Each grader is unaware of the opinions of the other graders.
Differences Between Diamond Certification Labs - GIA - AGS - EGL – IGI
Only when there is sufficient agreement between individual graders is a color grade assigned. Since light source and background can have a significant impact on the appearance of color within a diamond, the grading environment is kept to a neutral gray and white. For round brilliant diamonds, a cut grade is assigned once the color and clarity grading process is complete. The diamond's brightness , fire , and scintillation are assessed and incorporated into the cut grade.
The diamond's measurements, proportions, facet angles, polish, and symmetry are also factored into the final cut grade.
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As diamonds move through the grading process, they are monitored by a central tracking department using electronic surveillance equipment which can pinpoint the diamond's exact location at any time. Upon completion of each grading step, diamonds return to the inventory control department before being sent to the next step. This insures that the distribution of diamonds to graders is completely random. Every diamond receiving a diamond dossier certificate is laser inscribed with the GIA certificate number. Diamonds receiving a full grading report can also be laser inscribed at the owner's request.
Any laser inscription is noted on the certificate itself. Once the grading process is complete, GIA issues the diamond's certification. The report is printed with micro print lines, a hologram, and other security components before being laminated. This helps to prevent tampering while preserving the certificate over time. The final report is then placed in a protective sleeve and delivered to the owner, along with the originally submitted diamond. Questions about the certification process? Ask a diamond consultant for answers.