Gemmology Diploma
Learn more about what you will study on Gem-A’s globally-recognised Gemmology Diploma course.
Further your knowledge of Gemmology
At Gem-A, we have supported thousands of students who want to advance their gemmological knowledge and secure a world-recognised and industry-respected qualification.
Our Gemmology Diploma is the most prestigious gemmological qualification in the gem and jewellery trade. You will look at a wider range of gems, synthetics and treatments, and will build upon the practical and theoretical knowledge learned during your Gemmology Foundation course, leading to a more in-depth understanding of gemmology and the principles of gem testing and enhanced gem identification skills.
Graduates of the Gemmology Diploma can apply for Fellowship of Gem-A, allowing them to use the letters FGA after their name. FGA Membership status conveys a student’s knowledge, integrity, membership of a professional body and commitment to professional development, and is highly valued within the gem industry.
Course Details
Duration
4 or 9 Months
Price
From £4,385
Qualification
Gem-A Level 6 Diploma in Gemmology
Study method
Gem-A London, online or at an Accredited Teaching Centre
Who can apply?
Only graduates of our Gemmology Foundation course can apply for the Gemmology Diploma
Eligibility criteria
To be eligible for the Gemmology Diploma, you must have first passed Gemmology Foundation
Course materials provided
Comprehensive Diploma course notes; practical handbook and workbook; Diploma stone set containing 20 rough and cut specimens. Those choosing to study online will also receive a travel microscope
If you have any questions regarding the courses, please contact education@gem-a.com
Read more detailed information about this course by downloading the syllabus above, or visit the Student Resources area where you can find our prospectus and other useful information.
GEMMOLOGY DIPLOMA
What will I learn?
Building on from the knowledge gained during the Gemmology Foundation, the Gemmology Diploma course covers a range of advanced skills and techniques.
Gem treatments &
production
An in-depth look at treatments and synthetic materials, including their production, use, identification and the resulting implications for the gem trade, taking into account the ethical, environmental, and technological implications and applications of gemmology.
Applying scientifc
principles
How to interpret results from advanced gem-testing equipment and apply scientific principles and concepts to solve gemmological problems, and to assess the validity, reliability and credibility of scientific information related to the study of gems.
Gem testing &
information
How to select, organise and present relevant gemmological information using professional and technical vocabulary. Additionally, how to demonstrate a logical approach to gem testing, and the capability to acknowledge limitations and uses of certain tests.Â
I enjoyed every bit of it. I studied it for mainly pleasure and also in the hope I could in some way be involved in the industry… It was certainly challenging but I loved it
Dayanthi Ratnayake
Gemmology Foundation Alumni
How to Study with Gem-A
We have three different study options for you to choose from, in-person at Gem-A London or through one of our Accredited Teaching Centres around the world, or by online distance learning (ODL). Find out more below.
Study at Gem-A London
Learners based in the UK can choose to study in person at Gem-A London, situated a stone’s throw away from the world-renowned diamond district.
Study at an ATC
Learners around the world can study in person at one of our 40 Accredited Teaching Centres (ATC) found throughout Asia, Europe, America and The Middle East.
Upcoming Gemmology Diploma courses
Use the table below to find an upcoming Gemmology Diploma course on-site at Gem-A London or online delivered by Gem-A.
Ready to apply?
If you wish to apply by post/email please download our PDF application form and send to our London HQ or email to education@gem-a.com. Make sure to review the Terms and Conditions, as you will need to agree to them when completing the application form.Â
COURSEWORK & EXAMS
How will I be assessed?
In order to help steer your learnings into an advanced understanding of gemmology, you will be assessed in the following ways.
Assessed
Coursework
On the Gemmology Diploma, you will undertake four online assessments
Examinations
Two examination papers combining theory and practice, plus one practical exam
Practical
Lab Class
The practical lab class is only applicable to ODL students.
TESTIMONIALS
Hear from our community
"Gem-A has given me the pass to explore the world of gems to a depth I didn't think was out there until successfully passing my DGA & FGA. Online Distance Learning enabled me to continue my job at our family business, and learn alongside work."
"I highly recommend Gem-A! The teachers were exceptional, providing insightful knowledge and guidance. Their expertise and passion made learning a delight. Gem-A exceeded my expectations and equipped me with invaluable skills for my career in the Gem trade."
"Gem-A gave me the knowledge and the skills to understand the science & beauty of gemstones and the confidence to work as Head of the Laboratory at European Diamond Report. I recommend Gem-A to everyone dreaming of starting a career in this unique industry."
As a long-time gemstone collector, I pursued Gem-A's course to enhance my expertise. It provided the knowledge to offer compelling explanations to customers and appreciate the unique gifts from the Earth, fostering joy without words
"As a gemmologist appraiser acting as an advisor to extremely important jewellery collections, Gem-A's Diploma in gemmology has given me a added layer of credibility as well as a deeper understanding of gemstones from a more scientific and crystallographic perspective."
"I took the Gem-A course because no one in our company had the qualification. I highly recommend it for those serious about studying gemstones. It deepens your knowledge and, even when it gets tough, perseverance yields results. I can now convey what I've learned in my own words when explaining to clients and the general public."
"Many find it challenging to balance work and Gem-A studies, but I believe it enhances knowledge retention. I created outputs like gem collections and monthly birthstone posts in my work, making it more memorable when shared. This communication built trust and connections in my business."
"I remember intense training to identify numerous gemstones in a limited time for the practical exam. With years in the industry, I pursued Gem-A's Gemmology Diploma to deepen my expertise and recommend it to those committed to the field."
STUDY ROUTES
What's next?
Once you’ve completed your diploma you can progress through the following routes
Gemmology Diploma
Gemmology Diploma Awarded
Eligibility for FGA membership status
BSc in Gemmology & Jewellery Studies
Gain your BSc degree awarded by Birmingham City University
*Optional: These courses or classes are not required to become a FGA and/or DGA member, or for applying for the BSC in Gemmology & Jewellery Studies delivered by Birmingham City University.
