Registered Gemologist Appraiser

IIJA Registered Gemologist Appraiser Program

Hi RJ,
  I am so thrilled and happy to have received my RGA from the ISG. I pray and only hope for the massive growth of your incredible organization. When I started GIA in 1978 the program was nothing in comparison to what you have offered. It is a shame that so many people are unaware of what wonderful things your program offers not just from the standpoint of earning a diploma; also from all of the information you’ve let us with which is an appreciated flood. I still look forward to one day meeting and or working with you in the future. I look forward to you starting an alumni Association as well.
Warmest regards and thank you for everything,
Craig Sperling
July 13, 2017

Registered Gemologist Appraiser Package  

The ISG Registered Gemologist Appraiser Program is the world leader in gemology and jewelry appraisal education with courses designed, developed and produced by licensed insurance professionals, and professional gemologists holding the world’s top gemology credentials. Our program consists of an expanded list of courses that are not available from any other gemology or appraisal education organization, making us truly unique in the field of appraisal education. Our program is presented with fully migrated HTML5 mobile friendly courses you can study anywhere with virtually any computer or mobile device. This complete program includes eight (8) courses in gemology and jewelry appraisal (listed below) that are taken individually, but can be purchased at a money-saving, single payment program package below . This program is for those who wish to study gemology and personal property appraisal specializing in jewelry and gemstones, or those in the gemstone industry or wishing to enter the gemstone industry, and would like a proper education in the evaluation of jewelry and gemstones. Successful completion of this program awards the student the ISG Registered Gemologist Appraiser title.

FREE! Registered during March with the Single Payment RGA Package Registrations and receive the finest book on emeralds: Emeralds, A Passionate Guide by the world’s foremost authority on emeralds: Ronald Ringsrud.

“This book is a true adventure, a work of imagination and creativity….”

— From the foreword by John Koivula, Chief Gemologist, GIA

To earn your ISG Registered Gemologist Appraiser Diploma you must complete the following courses and practical program, which are all included with your Registered Gemologist Appraiser Single Payment Program Package.  Click on the course image to visit the course or practical module to learn more.

Introduction to Watches

Course: ISG105
Lessons: 6
Video Lectures: 20  

Pearls Course

Course: ISG106
Lessons: 9
Video Lectures: 24  


Course: ISG101
Lessons: 14
Video Lectures: 34  

Colored Gemstones

Course: ISG102
Lessons: 17
Video Lectures: 30  

Gemology Tools and Techniques

Course: ISG103
Lessons: 16
Video Lectures: 30  

Created and Treated Gemstones

Course: ISG104
Lessons: 14
Video Lectures: 14

Evaluating Damaged Jewelry

Course: ISG108
Lessons: 8
Video Lectures: 18 

Personal Property Appraisal

Course: ISG107
Lessons: 16
Video Lectures: 17  

RGA Program Practicals Module

To complete your RGA program you will be sent the following gemstone practical package for hand's-on practice and evaluation.

practical set

The ISG Practicals Module provides you with hand’s-on experience by sending you a large collection of diamonds, pearls, colored gemstones and a special collection of Created and Treated Gemstones provided to us from Chatham Created Gems. We provide this collection for you to get hand’s-on practice of your skills, right in your own home. No need to make expensive and time consuming trips to take your practical like other schools. With our Classroom-At-Home program we send the gemstones and diamonds to you in a single complete package for grading and evaluation once you have completed all courses in gemology for your RGA. We will grade your work and help you become the finest gemologist possible at the world’s lowest cost. The IIJA Practicals Module is included with your single payment course package, and available as a stand-alone module for those taking the Individual Course program.

Gem Equipment Included

Here is a list of gemological equipment you will receive with your RGA Program Package.

The ISG Registered Gemologist Appraiser Program with Gem Equipment Package comes with all of the tools you need to complete the course program and start your professional career. This Gem Equipment Package, aloong with 5 StudyGems to keep for your reference, are included in your ISG Registered Gemologist Package with Gem Equipment. Or purchase your equipment later if you wish.

Included Equipment:

  • Polariscope with conoscope,
  • Refractometer, RI Liquid,
  • Diffraction Grating Spectroscope,
  • Calcite Dichroscope,
  • 10x Jeweler’s Loupe
  • MM Gauge
  • Gemstone holder/tweezer

Exams, Certificates and Diplomas

Here is the information on how you complete the RGA program.

Certificates and Diplomas:A Certificate of Completion is awarded to the student after successful completion of each course. The Registered Gemologist and Registered Gemologist Appraiser diplomas are awarded after completing all courses, final exams, and practical exams. Final exam includes online written exam, a practical gem identification exam and a jewelry appraisal final exam sent to you for completion and return to the ISG office.

Registry of Gemologist Appraisers: Through our Jewelry Adjuster partnership in the insurance industry, the ISG maintains a Registry of our Registered Gemologist Appraisers and Registered Gemologists to the insurance industry. 

Advanced Insurance and Gemological Lab Support: The ISG maintains outreach programs to the local insurance industry for our graduates. Additionally, we provide advanced gemological lab services to our graduates to help them maintain top level credentials and services within their market regions.

2 Year Re-Certification: The ISG Registered Gemologist Appraiser and Registered Gemologist titles require re-certification every 2 years. The re-certification process includes a refresher course, updates on the latest industry developments and an exam to insure the title holder is up to date with the latest information and developments of the industry. This is standard operating procedure of all insurance related industries to maintain professional standards. 

IIJA Logo and Link: It is also required that RGA and RG title holders maintain the ISG logo and link on their websites as part of the graduate support of the ISG.

Start When You Are Ready To Begin!

You may begin your study towards the ISG Registered Gemologist Appraiser Diploma with any of the courses. Work at your own pace, study when and where you have the time. Your future is in your hands with the International School of Gemology.

Registered Gemologist Appraiser Package
(without equipment):

Registered Gemologist Appraiser Package
With Gem Equipment and StudyGem Set:


Save money by using our single payment package plan.