Diploma Courses

Course Code: GJRTI/Gem/Dip_0001

Duration: 12 Months (1500 Notional Hours)

NVQ Level: Not specified

Available Centers: Kaduwela, Ratnapura

Registration Fee: Rs. 2,500.00

Course Fee: Rs. 150,000.00

Entry Requirements:

• 3 passes at G.C.E. (A/L)
• or NVQ Level 4 Qualification
• or 2 years of industry experience

This comprehensive diploma is designed for individuals aiming to become skilled professionals in gemmology. Offered by the Gem and Jewellery Research and Training Institute (GJRTI)—Sri Lanka’s leading public institute for gem education—this program combines deep theoretical knowledge with intensive practical training.

Students will learn to accurately identify, grade, and evaluate gemstones using modern gemmological instruments and techniques. This program is ideal for those who wish to become professional gemmologists, jewellery valuers, or enter global gem markets with confidence.

Key Learning Areas

• Physical and optical properties of gemstones
• Geology and crystallography of gem minerals
• Light behavior in gems (refraction, polarization)
• Use of advanced gem testing instruments
• Gem classification, treatments, and enhancements
• Natural, synthetic, and artificial gemstones
• Gemstone cutting, fashioning, and value addition
• Gem valuation and marketing
• Jewellery applications of gemstones
• Final applied project

Course Code: GJRTI/T/Jwl/Dip_5001

Duration: 2 Years (Part time/Weekend) 

Available centres – Kaduwela

Registration fee – Rs.2000.00

Course fee – Rs.125,000.00

Entry Requirements – Relevant NVQ Level 4 Qualification or 3 passes at GCE (A/L)

This two-year Diploma in Professional Jewellery is designed to equip individuals with the comprehensive knowledge, technical skills, and creative abilities essential for a successful career in the jewellery industry. The course covers a wide range of topics, from design and manufacturing to marketing and entrepreneurship, ensuring that graduates are well-prepared for various professional occupations such as technologists, supervisors, managers & many more

Key Learning Areas Include:

• Jewellery design and technical realization
• Gemmology for jewellers
• Computer-aided jewellery design and manufacturing (CAD/CAM)
• Quality assurance and production management
• Marketing, sales, and entrepreneurship
• Raw material handling and workplace safety

Additionally, the course provides entrepreneurial skills, enabling to launch and manage their own jewellery businesses, contributing to innovation and growth within the industry.