Professor Sugianto, geologist from the University of Indonesia will conduct the classroom training.
- Specific Gravity Testing Part 1: Definitions
- Specific Gravity Testing Part 2: Using a Balance Scale or a Hanneman Specific Gravity Scale
- Specific Gravity Testing Part 3: Calculating Specific Gravity With An Electronic Scale
- Specific Gravity Testing Part 4: Refining Your Specific Gravity Testing Techniques
- Specific Gravity Testing Part 5: Using Heavy Liquids
- Using a Polariscope
- The Dichroscope
- The Microscope
- The Spectroscope
- Ultraviolet Testing
- Destructive Tests
- Magnetism in Gemology – The Forgotten Property?
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 engage students in the syllabus content.
Classes are taught in Bahasa Indonesia.