Education

Diploma in Gemmology [DGem(SL)] Programme – 2026

Your Gateway to a Professional Career in Gemmology

Open to Local and International Candidates

Unlock the science, beauty, and global trade of gemstones through Sri Lanka’s leading professional qualification in gemmology. This comprehensive one-year diploma programme is designed for aspiring gemmologists, jewellery professionals, traders, and enthusiasts seeking industry-recognized expertise and practical skills.

The Gemmologists Association of Sri Lanka (GASL) is the premier professional body representing gemmologists in the source country. With the objective of providing a well-recognized and professionally accredited qualification, GASL has been conducting the Diploma in Gemmology [DGem(SL)] courses and examinations annually since 2009, producing competent professionals who serve both local and international gem and jewellery industries.

Programme Highlights

1. Internationally relevant gemmology curriculum
2. Hands-on practical training with gemstones
3. Expert lectures by experienced professionals
4. Ideal for careers in gemstone identification, trading, jewellery designing and manufacturing

Modules Covered

• Module A– Introduction to Gemmology
• Module B– Diamond Grading and Trading
• Module C– Fashioning of Gemstones, Jewellery Designing and Manufacturing
• Module D– Pearls and Other Organic Gem Materials

Objectives of the Diploma Programme

• To produce well-qualified professional gemmologists with modern knowledge and advanced techniques relevant to the gem and jewellery industry
• To enhance and upgrade the professional skills within the gem and jewellery sector

Programme Details

This course is open to both Sri Lankans and resident / non-resident foreign candidates. The medium of the course is English. Candidates will be interviewed, and only the successful candidates will be enrolled on the programme. 

Registration fee (valid for two academic years)

• Sri Lankans           : LKR 5,000
• Foreigners             : LKR 15,000

Course fee for Diploma in Gemmology [DGem(SL)] programme – 2026

• Sri Lankans           : LKR 150,000
• Foreigners             : LKR 450,000

Payment Options

• Full payment (entitled to 10% concession) OR
• Four instalments

Sri Lankan Candidates

• LKR 60,000 at registration
• Three instalments of LKR 30,000 each by 30^th April, 31^st July, and 31^st October 2026

Foreign Candidates

• LKR 180,000 at registration
• Three instalments of LKR 90,000 each by 30^th April, 31^st July, and 31^st October 2026

(Programme fees are subject to revision from time to time)

Fees for Individual Modules

Module A only

• Sri Lankans           : LKR 75,000
• Foreigners             : LKR 225,000

Module B, C or D only

• Sri Lankans           : LKR 50,000
• Foreigners             : LKR 150,000

Course Schedule

1. Inauguration       :18th January 2026
2. Lecture Days       : Saturdays or Sundays (two groups depending on student numbers)
3. Duration              : One Year

Registration & Enquiries

📧 Email:        info.jewels.gasl@gmail.com
🌐 Website:    www.gemmology.lk

📞 Telephone:0117 202032
📱 Mobile:      0715 339559 (Thilak) / 0766 768219 (Javindu)

Diploma in Gemmology Examination Details

The examination consists of theory and practical components and is open to both Sri Lankan and foreign candidates.

Examination Structure

Theory Examination

• Theory Part I and Part II

Practical Examination

• Practical Part I and Part II

Theory Part I

• Ten (10) compulsory questions
• Duration: 2½ hours
• All questions carry equal marks

Theory Part II

• Fifteen (15) questions from Modules A, B, C, and D
• Candidates must answer six (6) questions:
  • Three (3) from Module A
  • One (1) from each of Modules B, C, and D
• Duration: 3 hours
• All questions carry equal marks

Practical Part I

1. Identification of fifteen (15) specimens
2. Duration: 1½ hours

Practical Part II

1. Identification of fifteen (15) specimens
2. Duration: 2½ hours

*Additional marks will be awarded for a duly completed Practical Workbook

*All four papers are compulsory for DGem(SL) candidates

Module B, C & D Certificate Candidates

1. In Theory Part II, all three (3) questions in the relevant module are compulsory
2. Do not need to answer questions from other modules
3. Not required to sit Theory Part I
4. Separate practical examinations will be conducted for relevant Modules

Awards and Certification

• Diploma in Gemmology [DGem(SL)] – awarded to candidates;
• passing all four papers, obtaining a minimum of 55% in each paper OR
• passing Modules B, C, and D separately (with their relevant practical exams), and later passing:
  • Theory Part I
  • Module A of Theory Part II
  • Practical Part I
  • Practical Part II
• Certificate in Gemmology – awarded to candidates passing Theory Part I and Practical Part I

Module Certificates

• Module A – Certificate in Introduction to Gemmology
• Module B – Certificate in Diamond Grading and Trading
• Module C – Certificate in Fashioning of Gemstones, Jewellery Designing & Manufacturing
• Module D – Certificate in Pearls and Other Organic Gem Materials

Special Awards 

• Best Achiever in Theory Examination 
• Best Achiever in Practical Examination
• Best Achiever in Overall Examination

Examinations will be held in December each year, and the medium of the examination is English.

Upon successfully receiving the Diploma, candidates are entitled to use the professional qualification DGem(SL) after their names. They are also eligible to apply for membership of the Gemmologists Association of Sri Lanka and, upon acceptance, may use the designation MGA(SL). Many diploma holders produced by the Association are currently well employed in both Sri Lankan and international institutions.

Examination Fees (Non-refundable)

DGem(SL) Examination

• Sri Lankans     : LKR 40,000 (LKR 10,000 per paper)
• Foreigners       : LKR 120,000 (LKR 30,000 per paper)

Module Examination

• Sri Lankans     : LKR 25,000
• Foreigners       : LKR 75,000

The Executive Committee of GASL reserves the sole right to determine examination dates, venues, and the release of results.