Diamond Diploma
Learn more about what you will study on Gem-A’s globally-recognised Diamond Diploma course.
A comprehensive understanding of Diamonds
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.
A comprehensive understanding of diamonds and diamond grading is essential for the buying, selling and trading of diamonds. One of the most valuable diamond qualifications worldwide, our Diploma will give you a comprehensive understanding of diamonds and how the diamond market operates.
You will study the properties of diamonds, the factors affecting a diamond’s appearance and properties, learn about diamond grading, the 4Cs (carat weight, colour, clarity, and cut) and the other factors that influence value, as well as how to identify and recognise imitations, synthetics and treatments.
Our graduates go on to successful careers in a number of areas in the trade, such as buying, selling, auctioning or valuing diamonds and diamond-set jewellery. Diamond Diploma graduates must apply for Gem-A Membership in order to continue to use the post-nominal DGA after their name — a sign of excellence in the trade.
Course Details
Duration
4 or 9 Months
Price
From £3,820
Qualification
Gem-A Level 5 Diploma in Gem Diamond
Study method
Gem-A London, Online or at an Accredited Teaching Centre
Who can apply?
Everyone from complete beginners and jewellery sales professionals, to auctioneers, business leaders and scientists wishing to expand their knowledge
Eligibility criteria
Non-native English speakers must have an English qualification, e.g. Academic IELTS (Level 7) or TOEFL (score of 95-120). Speak to your preferred Accredited Teaching Centre to find out more about entry requirements in your country
Equipment provided
Diamond Diploma course notes; set of diamond simulants; diamond grading manual and workbook; diamond crystal model; portable diamond instrument kit, including a 10x loupe, thermal tester, stone tweezers, stone cleaning cloth and a long-wave ultraviolet key ring
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.
DIAMOND DIPLOMA
What will I learn?
On this course, you will learn about diamonds’ ethical, social, and environmental impact, how to assess and value diamonds accurately, and the science of diamond structure, properties, and identification, including distinguishing between natural and synthetic diamonds.
Ethical, social & environmental implications
Explore the ethical, social, economic, and environmental consequences of diamond mining and trade, addressing issues like conflict diamonds, sustainability, and their impact on society.
How to grade and value diamonds
Learn the precise assessment of a diamond’s quality, including factors such as colour, clarity, and other attributes affecting its value. This part also covers various grading systems and valuation methods that will help you in the field.
Diamond structure, properties & identification
Study the diamond’s internal structure, physical and optical properties, and the mechanisms that produce different diamond types. Additionally, recognising and distinguishing between natural, treated, and synthetic diamonds and compare them to simulants.
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, through one of our Accredited Teaching Centres, or by online distance learning (ODL). Find out more below.
Study at Gem-A HQ
Learners based in the UK can choose to study in person at the Gem-A HQ in London, UK, situated a stone’s throw away from the world-renowned diamond district.
Study at an ATC
Learners can study in person at one of our 40 Accredited Teaching Centres (ATC) found throughout the world, or at the Gem-A HQ in London, UK.
Upcoming Diamond Diploma courses
Use the table below to find an upcoming Diamond Diploma course on-site at Gem-A London or online delivered by Gem-A.
| Code | Name | Start Date | Duration | Price (£) | Enquire |
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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.
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
Four online assessments
Examinations
Written examination (Diamond Theory Paper 1) and Practical examination (Diamond Practical Paper 2)
Practical
Lab Class
Only applicable to online students, culminating in Diamond Practical Paper 2. Accredited Teaching Centre students will complete this practical training and examination as part of their on-site studies.
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 the Diamond Diploma you can progress through the following routes
Diamond Diploma
Diamond Diploma Awarded
Eligibility for DGA 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.
