Professor Sugianto, geologist from the University of Indonesia will conduct the classroom training.

• The Nomenclature of Jewelry Part 1: Settings
• The Nomenclature of Jewelry Part 2: Bracelets and Necklaces
• The Nomenclature of Jewelry Part 3: Rings
• The Nomenclature of Jewelry Part 4: Earrings
• The Nomenclature of Jewelry Part 5: Attachments
• Appraising: Basic Terminology
• Appraising Gems and Jewelry
• Gem Price Guide
• Jewelers Pricing Survey

DGL uses the "Flipped" classroom instructional methodology. This type of learning has the student study the IGS online instructional content prior to the class. In-class lessons are then used more to discuss, answer questions, have live demonstrations, hands-on training  and in other ways to engage students in the syllabus content.

Classes are taught in Bahasa Indonesia.