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# United States Gemological Institute Education Classes

The New American Standard in Gemology Education

## Sitemaps

- [XML Sitemap](https://usgemology.com/sitemap.xml): Contains all public & indexable URLs for this website.

## Pages

- [United States Gemological Institute Online Gemology Courses](https://usgemology.com/) - Earn professional gemology and jewelry appraisal certification online with the United States Gemological Institute. Trusted education for the jewelry industry.
- [Jewelry Expert Witness & Forensic Gemology Services](https://usgemology.com/jewelry-gemology-insurance-expert-witness-services/) - Forensic Gemology Services specializing in jewelry expert witness testimony, insurance claims, appraisal disputes, litigation support, and fraud investigations.
- [Frequently Asked Questions About the USGI Education Programs](https://usgemology.com/frequently-asked-questions/) - Frequently Asked Questions about the USGI Registered Gemologist Appraiser and Registered Gemologist Programs are answered here.
- [Video Lectures and Learning](https://usgemology.com/video-lectures-and-learning/) - Welcome to the ISG Video Lectures and Learning Page. Here, you will find a selection of teaching videos covering a variety of gemology topics.
- [USGI Newsletter Archive](https://usgemology.com/usgi-newsletter-archive/) - Welcome to the USGI Newsletter Archive. Here you will find the lasted news and announcements from the United States Gemological Institute
- [USGI: The Story of Larimar](https://usgemology.com/usgi-the-story-of-larimar/) - Story of Larimar is one of the world’s most distinctive gemstones: a soft blue stone that seems to carry the color of tropical water and Caribbean light inside its surface.
- [Request for Regulatory Investigation: Memorial Diamond Industry](https://usgemology.com/request-for-regulatory-investigation-memorial-diamond-industry/) - Request for Regulatory Investigation Memorial Diamond Industry, This matter concerns a recurring and largely unsubstantiated representation made to consumers.
- [What is a Registered Gemologist Appraiser?](https://usgemology.com/what-is-a-registered-gemologist-appraiser/) - Registered Gemologist Appraiser. The RGA title is tied to the Insurance Registry of Jewelry Appraisers and Gemologists maintained by the Global Claims Associates
- [The Story of Gold Part One: Formation](https://usgemology.com/the-story-of-gold-part-one-formation/) - The Story of Gold. Long before it became a ring, necklace, coin, or keepsake, it was part of a cloud of matter hurled into space by dead stars crashing together
- [USGI Editorial: The Diamond Grading Illusion:](https://usgemology.com/usgi-editorial-the-diamond-grading-illusion/) - The Diamond Grading Illusion: How the Industry Invented a Paper Shield. A consumer alert from the United States Gemological Institute
- [Why Your Appraisals May Be Hurting Your Store](https://usgemology.com/why-your-appraisals-may-be-hurting-your-store/) - Why Your Appraisals May Be Hurting Your Store. When customers do not understand what an appraisal number means, that document can create confusion, not trust.
- [About the United States Gemological Institute](https://usgemology.com/about-the-united-states-gemological-institute/) - Learn about the United States Gemological Institute (USGI), a leader in gemology education, professional appraisal training, and jewelry expertise.
- [USGI Make Gemology Affordable Again](https://usgemology.com/usgi-make-gemology-affordable-again/) - USGI Make Gemology Affordable Again
- [Ishihara Color Vision Test](https://usgemology.com/ishihara-color-vision-test/) - Ishihara Color Vision Test Below you will find various numbers embedded in dot matrix images. Based on your color vision acuity you should see the numbers shown
- [Meet Your Instructor for your USGI education](https://usgemology.com/meet-your-instructor/) - Allow us to introduce you to the person who will guide you on your journey in your USGI courses - Meet Your Instructor!
- [Why is the USGI Tuition So Low?](https://usgemology.com/why-is-usgi-tuition-so-low/) - Why is the USGI Tuition So Low? Traditional gemological training would benefit many, but most can not afford the cost. The USGI was established to change that.
- [USGI Student Registration Agreement](https://usgemology.com/isg-student-registration-agreement/) - Student Registration Agreement. This agreement establishes your rights and responsibilities as an ISG student.
- [The "Old Wood" Effect and Memorial Diamonds](https://usgemology.com/the-old-wood-effect-and-memorial-diamonds/) - The "Old Wood" Effect and Memorial Diamonds outlines the scientific research that shows memorial or cremation diamonds are actually made from natural gas carbon
- [Forensic Gemology in Jewelry Litigation](https://usgemology.com/forensic-gemology-in-jewelry-litigation/)
- [USGI Gemological Equipment and Bookstore](https://usgemology.com/usgi-gemological-equipment-and-bookstore/)
- [Iranian Gemstones & U.S. Sanctions: What Every Dealer Needs to Know](https://usgemology.com/iranian-gemstones-u-s-sanctions-what-every-dealer-needs-to-know/) - Iranian Gemstones & U.S. Sanctions: Gem dealers, whether individuals or companies, must be aware that the ITSR applies to a broad range of activities.
- [USGI Editorial: What the word "Ethics" means to us](https://usgemology.com/usgi-editorial-what-the-word-ethics-means-to-us/) - USGI Editorial: What the word "Ethics" means to us. The word “ethics” can be used as passive or active when it comes to a business. Here is what it means to us.
- [Utilizing Artificial Intelligence to Identify Clone Watches](https://usgemology.com/utilizing-artificial-intelligence-to-identify-clone-watches/) - Utilizing Artificial Intelligence to Identify Clone Watches. No clone manufacturing company can flawlessly emulate the perfection of the genuine watch companies
- [USGI Investigation of "Clone" Watches](https://usgemology.com/usgi-investigation-of-clone-watches/) - USGI Investigation of "Clone" Watches. Part 1: They are a major source of fraud to insurance companies, jewelers, and appraisers.
- [The Gemstone "Origin Mirage" and Your Appraisal Liability](https://usgemology.com/the-gemstone-origin-mirage-and-your-appraisal-liability/) - The Gemstone "Origin Mirage" and You. An origin report is an opinion based on probability, not a biological DNA test. Here is a way to protect yourself.
- [Identifying Lab Created Diamonds](https://usgemology.com/identifying-lab-created-diamonds/) - Identifying Lab Created Diamonds. For many years, grassroots-level jewelers and gemologists have struggled to identify lab-created diamonds. Most of this time-
- [Student Services and Support](https://usgemology.com/student-services-and-support/) - Welcome to the ISG Student Services Page. Here you will find information and links to assist you during and after your student term at the USGI.
- [USGI Free Webinar Series Registration Page](https://usgemology.com/usgi-free-webinar-series-registration-page/) - USGI Free Webinar Series Registration Page where you can learn about and register for free live webinars to learn more about jewelry, gemology, and jewelry appraisals.
- [USGI Tuition Payment Plan](https://usgemology.com/isg-tuition-payment-plan/) - The USGI Tuition Payment Plan through our STRIPE payment system offers students a way to spread out the cost of tuition. Join us and spread out the costs.
- [The FTC Guides Against Deceptive Pricing in the Retail Jewelry Industry](https://usgemology.com/the-ftc-guides-against-deceptive-pricing-in-the-retail-jewelry-industry/) - The FTC Guides Against Deceptive Pricing in the Jewelry Industry establish clear standards for how jewelers should advertise prices, discounts, and value comparisons.
- [Insurance Replacement Pricing: A Practical Guide for Jewelry Appraisals](https://usgemology.com/insurance-replacement-pricing-a-practical-guide-for-jewelry-appraisals/) - Insurance Replacement Pricing: A Practical Guide for Jewelry Appraisals presents solutions to the problem of inflated insurance replacement values for everyone.
- [The Impact of Replica Watches on the International Watch Market](https://usgemology.com/the-impact-of-replica-watches-on-the-international-watch-market/) - The Impact of Replica Watches on the International Watch Markets. Examining the Impact of Counterfeit Timepieces on the Global Watch Industry
- [USGI Native American Scholarship Application](https://usgemology.com/usgi-native-american-scholarship-application/) - The USGI Native American Scholarship supports Native American youth pursuing gemology/appraisal education through the Registered Gemologist Appraiser program.
- [Zona Libre de Colon. The story never told.](https://usgemology.com/zone-libre-de-colon-the-story-never-told/) - The story of my JCK assignment to cover the Zona Libre de Colon in 1995 and the events that transpired on that journey, and the story that did not get told.
- [The Story of Sapphire](https://usgemology.com/the-story-of-sapphire/) - The Story of Sapphire. Exploring the History, Significance, Geology, and Beauty of a Royal Gemstone.
- [The Story of Petrol Quartz](https://usgemology.com/the-story-of-petrol-quartz/) - The Story of Petrol Quartz. Few gemstones provide as much fun as quartz. The amazing variety of inclusions found in quartz crystals-
- [The Story of Time](https://usgemology.com/the-story-of-time/) - The Story of Time. A brief look at the advancements in timekeeping from our upcoming Accredited Watch Professional Program.
- [The Story of Freshwater Pearls](https://usgemology.com/the-story-of-freshwater-pearls/) - The Story of Freshwater Pearls. For many years, the Chinese freshwater pearl industry produced what were known as “rice pearls.” As the name suggests, these-
- [The Story of Agates and Jaspers](https://usgemology.com/the-story-of-agates-and-jaspers/) - The Story of Agates and Jaspers. For many years, the mainstream jewelry industry has considered agates and jaspers the materials of hobbyists, lapidaries,-
- [Susan Bailey v. Franz Jewelers, et al](https://usgemology.com/susan-bailey-v-franz-jewelers-et-al/) - Susan Bailey v. Franz Jewelers, et al. It is every jeweler’s nightmare. The customer believes they have been wronged by something they perceive the jewelry-
- [The Story of Blue Topaz](https://usgemology.com/the-story-of-blue-topaz/) - The Story of Blue Topaz. It is one of the failures of our industry that new gemstones can be introduced into the market without proper testing and verification.
- [The Story of Tibet Andesine](https://usgemology.com/the-story-of-tibet-andesine/) - The Story of Tibet Andesine. Just as Marconi did to Tesla, there has always been someone looking at someone else’s success and finding a way to steal that-
- [The Story of Oregon Sunstone](https://usgemology.com/the-story-of-oregon-sunstone/) - The Story of Oregon Sunstone. Eleven million years ago, in the southeast portion of Oregon, the earth’s surface fractured, allowing vast lava to spread across-
- [The Story of Created Moissanite](https://usgemology.com/the-story-of-created-moissanite/) - The Story of Created Moissanite. Over the years, the jewelry industry has benefited from industrial research done for purposes well outside the scope of gems-
- [Ebay, the GIA, and Section 230](https://usgemology.com/ebay-the-gia-and-section-230/) - Ebay, the GIA, and Section 230. As a state-licensed Property and Casualty Insurance Adjuster and investigator specializing in high-value jewelry claims, I have-
- [Lessons from the Angry Janitor](https://usgemology.com/lessons-from-the-angry-janitor/) - Lessons from the Angry Janitor. Originally published a few years ago, sometimes we all need to be reminded that sometimes life’s most important lessons are-
- [Exposing the Truth About Lab Created Diamonds](https://usgemology.com/exposing-the-truth-about-lab-created-diamonds/) - Exposing the Truth About Lab Created Diamonds. This is a follow-up to our previous research on lab-created diamonds.
- [AGTA Hobbles their Dealers...and Buyers](https://usgemology.com/agta-hobbles-their-dealers-and-buyers/) - AGTA Hobbles their Dealers...and Buyers. AGTA CEO John W. Ford recently sent out an interesting press release in which the AGTA Board of Directors announced-
- [Understanding the Classification of Diamonds](https://usgemology.com/understanding-the-classification-of-diamonds/) - Understanding the Classification of Diamonds. Understanding the Classifications of Diamond …and why you and your staff need to understand these.
- [Cremation Diamonds: Insurance and Litigation](https://usgemology.com/cremation-diamonds-insurance-and-litigation/) - Cremation Diamonds: Insurance and Litigation. This year marks the 20th year since my first investigation of “Cremation Diamonds” while working in the Property-
- [Let's Talk About Gemology Credentials](https://usgemology.com/lets-talk-about-gemology-credentials/) - Let's Talk About Gemology Credentials. What is the difference between academic credentials and trademarks?
- [Hometown Jewelers and the Force Majeure Clause](https://usgemology.com/hometown-jewelers-and-the-force-majeure-clause/) - Hometown Jewelers and the Force Majeure Clause. It is the moment that you, your store, your reputation, and your money are at their most vulnerable.
- [Following the Critical Angle of Diamond Grading](https://usgemology.com/following-the-critical-angle-of-diamond-grading/) - Following the Critical Angle of Diamond Grading. Have you ever wondered why one diamond can be very brilliant, while another diamond may look dull and lifeless?
- [Let's Open a Refractometer](https://usgemology.com/lets-open-a-refractometer/) - Let's Open a Refractometer. Have you ever wondered what a refractometer looks like with its guts out? Just look at the image at left. From the USGI Classroom.
- [Measuring the Energy of Light](https://usgemology.com/measuring-the-energy-of-light/) - Measuring the Energy of Light. A couple of weeks ago we looked at the electromagnetic spectrum of visible light and using our MDM UV-VIS-NIR Spectrometer.
- [Quick Reference Guide to Sunstone](https://usgemology.com/quick-reference-guide-to-sunstone/) - Quick Reference Guide to Sunstone With the growing popularity and demand of Oregon Sunstone, there is a great deal of confusion (or maybe not) among many dealers.
- [Turquoise Investigation by the USGI](https://usgemology.com/turquoise-investigation-by-the-usgi/) - Turquoise Investigation by the United States Gemological Institute. A years-long investigation was conducted at the request of the Navajo Nation.
- [The Story of Ruby](https://usgemology.com/the-story-of-ruby/) - Story of Ruby. We will put all of this aside and simply look at how to identify rubies including the treated and created types. From United States Gemological.
- [Appraisers -v- Gem Labs: A Legal Imbalance](https://usgemology.com/appraisers-v-gem-labs-a-legal-imbalance/) - How can major gem labs avoid legal responsibility for errors while local appraisers cannot?
- [Black Diamond or Created Moissanite](https://usgemology.com/black-diamond-or-created-moissanite/) - Black Diamonds are among the hottest items in the jewelry market. Their very name conjures up dreams of exotic places and people. From United States Gemological.
- [When Breitling Brought the Airmen Home](https://usgemology.com/when-breitling-brought-the-airmen-home/) - When Breitling Brought the Airmen Home. A true story as told to me by a retired WWII B-17 pilot when I worked at USAA. United States Gemological Institute
- [Future of Gemological Laboratories in the Age of Artificial Intelligence](https://usgemology.com/future-of-gemological-laboratories-in-the-age-of-artificial-intelligence/) - Future of Gemological Laboratories. Artificial intelligence is increasingly being applied to gemstone identification and grading replacing the need for gem labs
- [Insurance Fraud and Replica Watches](https://usgemology.com/insurance-fraud-and-replica-watches/) - It is one of the easiest and most difficult to detect insurance fraud schemes I have seen since working with the Special Investigations Unit (SIU) at USAA
- [Career in Gemology and Jewelry Appraisal?](https://usgemology.com/career-in-gemology-and-jewelry-appraisal/) - Career in Gemology Learn more about the available career opportunities in gemology and jewelry appraisal with courses at the United States Gemological Institute
- [Testimonials of USGI Students and Graduates](https://usgemology.com/testimonials/) - Testimonials of ISG Students and Graduates are presented for your review and consideration.
- [Contact the USGI for More Information](https://usgemology.com/contact-us/) - Contact the USGI for any questions, comments or inquiries about our world-class programs in gemology and jewelry appraisal.
- [Guide to the International School of Gemology](https://usgemology.com/about-us/) - Get the background story of the International School of Gemology including their founding and gemological and appraisal education programs.
- [Graduate Support Programs](https://usgemology.com/graduate-support-programs/) - With graduates worldwide, the International School of Gemology takes great pride in our professional Graduate Support Programs.
- [ISG Best Online Gemology School](https://usgemology.com/isg-best-online-gemology-school/) - International School of Gemology Receives "Best Online Gemology School" from the industry.
- [Privacy Policy](https://usgemology.com/privacy-policy-2/) - Your Privacy is Important The Global Claims Associates is committed to the privacy of all our clients and guests. As such, we never provide any information to any outside entities, and protect your information with the most up-to-date Secure Socket Layer (SSL) certificates and security. Under no condition is any of our client information made

## Course

- [RGA for Professionals With Other Diplomas](https://usgemology.com/course/rga-for-professionals-with-other-diplomas/) - The RGA for Professionals is designed to bring professional-level jewelry appraisal study to those already holding gemology diplomas from other schools.
- [Registered Gemologist Appraiser Diploma Program](https://usgemology.com/course/registered-gemologist-appraiser-diploma-program/) - The Registered Gemologist Appraiser Diploma program includes 82 sections that cover everything to begin a journey into a successful jewelry appraisal career.
- [Registered Gemologist Diploma Program](https://usgemology.com/course/registered-gemologist-diploma-program/) - The Registered Gemologist Diploma Program consists of 55 modules that cover all aspects of earning the USGI Registered Gemologist Diploma to further your career
- [Accredited Gemology Professional](https://usgemology.com/course/accredited-gemology-professional/) - This course has 39 sections that cover all aspects of becoming an Accredited Gemology Professional, including diamonds, colored gemstones, and gem testing tools
- [Certified Watch Professional](https://usgemology.com/course/certified-watch-professional/) - Unlock the Secrets of Watch Expertise in Selling, Appraising, and Collecting as a Certified Watch Professional from the United States Gemological Institute.
- [Introduction to Gemology Online Course](https://usgemology.com/course/introduction-to-gemology-online-course/) - The Introduction to Gemology Online Course has been designed as a foundation study of gemology for those just starting their careers in gemstones.
- [2026 RGA Recertification | USGI Biennial Title Renewal](https://usgemology.com/course/2026-rga-recertification-usgi-biennial-title-renewal/) - 2026 RGA Recertification. Complete your 2026 Registered Gemologist Appraiser (RGA) title recertification online with USGI. Self-paced, quizzes, and certificate.
- [Certified Pearl Professional](https://usgemology.com/course/certified-pearl-professional/) - The USGI Certified Pearl Professional course is a complete education in pearls that will provide a professional level education in the pearl industry.
- [Ethical Practices in the Gemstone Industry](https://usgemology.com/course/ethical-practices-in-the-gemstone-industry/) - Ethical Practices in the Gemstone Industry. With increasing awareness of ethical issues the gem industry must demonstrate responsibility and ethical awareness

## Coupon

- [RG Coupon](https://usgemology.com/?coupon=rg-coupon)
- [Introduction to Gemology Coupon](https://usgemology.com/?coupon=introduction-to-gemology-coupon)

## Certificate

- [Certified Watch Professional](https://usgemology.com/certificate/certified-watch-professional/)
- [Introduction to Gemology](https://usgemology.com/certificate/introduction-to-gemology-2/)
- [Accredited Gemology Professional](https://usgemology.com/certificate/accredited-gemology-professional/)

## Quiz

- [Accredited Gemology Professional](https://usgemology.com/quiz/accredited-gemology-professional/)
- [2026 USGI Recertification Exam](https://usgemology.com/quiz/2026-usgi-recertification-exam/)
- [Gemology Apprentice](https://usgemology.com/quiz/gemology-apprentice/)
- [Certified Watch Professional](https://usgemology.com/quiz/certified-watch-professional/)
- [Created and Treated Gemstones](https://usgemology.com/quiz/created-and-treated-gemstones/)
- [Ethical Practices in the Gemstone Industry](https://usgemology.com/quiz/ethical-practices-in-the-gemstone-industry/)
- [Tools and Techniques](https://usgemology.com/quiz/tools-and-techniques/)
- [Diamonds](https://usgemology.com/quiz/diamonds/)
- [Evaluating Damaged Jewelry](https://usgemology.com/quiz/evaluating-damaged-jewelry/)
- [Personal Property Appraisal](https://usgemology.com/quiz/personal-property-appraisal/)
- [Litigation and Expert Witness](https://usgemology.com/quiz/litigation-and-expert-witness/)
- [Test Quiz](https://usgemology.com/quiz/test-quiz/)
- [Certified Gem Dealer Final Exam](https://usgemology.com/quiz/certified-gem-dealer-final-exam/)
- [Chatham Created Gems](https://usgemology.com/quiz/chatham-created-gems/)
- [Introduction to Gemology Final Exam](https://usgemology.com/quiz/introduction-to-gemology-final-exam/)
- [Certified Diamond Professional](https://usgemology.com/quiz/certified-diamond-professional/)
- [Pearls](https://usgemology.com/quiz/pearls/)
- [Gemstone Treatments](https://usgemology.com/quiz/gemstone-treatments/)
- [Colored Gemstones](https://usgemology.com/quiz/colored-gemstones/)
- [Introduction to Watches](https://usgemology.com/quiz/introduction-to-watches/)

## Course Categories

- [Professional Certificate Courses](https://usgemology.com/course_category/professional-certificate-courses/)
- [Diploma Programs](https://usgemology.com/course_category/diploma-programs/)

## Course Tags

- [pearls course](https://usgemology.com/course_tag/pearls-course/)
- [pearl education](https://usgemology.com/course_tag/pearl-education/)
- [online course in pearls](https://usgemology.com/course_tag/online-course-in-pearls/)
- [hands on pearl education](https://usgemology.com/course_tag/hands-on-pearl-education/)
- [ethics](https://usgemology.com/course_tag/ethics/)
- [ethics in gem industry](https://usgemology.com/course_tag/ethics-in-gem-industry/)
- [conflict diamonds](https://usgemology.com/course_tag/conflict-diamonds/)
- [conflict gemstones](https://usgemology.com/course_tag/conflict-gemstones/)