Rough Diamond Grading and Evalution - 4 Days
 Instructors: ELENA DELJANIN, M.Sc. FGA, Independent Consultant to GHI
BRANKO DELJANIN, B.Sc., FGA, DUG, Project Manager, GHI Research

Day 1

• Geology and the Origin of Diamonds
• Physical and Optical Properties of Diamonds
• Study of Diamond Crystallography and Morphology
• Typing of Diamonds
• Various Distortions Of Diamond’s Shape. How to Adopt Shapes.
• Lab: Practical Studies of Diamond Stress and Typing
• Lab: Practical Studies of Weight Estimation

Day 2

• Surface Features of Diamonds
• Cutting of Diamonds
• Diamond Cut for Weight, Diamond Cut for “Ideal”
• Prediction by Yield or by Efficiency?
• Clarity and Colour Grading
• Lab: Practical Studies  of Surface Features of Diamonds
• Lab: Practical Studies in Grading and Sorting

Day 3

• Classification of Diamond
• Work with Well Shaped Crystals
• The Basic Cross-section and Alternative Cross-sections
• How to Calculate the Future Diamond’s Weight
• Update on the Latest Diamond Treatments, Imitations and Synthetics
• Lab: Classification of Diamonds Rough
• Lab: Practical Studies with Natural, Treated and Synthetic Diamonds

Day 4

• Typomorphic Features of Diamonds of Various Origins
• Polished Diamonds: Modern Grading Systems and Pricing Information
• Work with Inclusions
• Basic Difference between Two Rough Diamonds Grading Approaches: Classification/Pricelist and through Polished Prediction/Polished Pricelist
• Valuation of Diamonds
• Lab:  Evaluation of Rough and Polished Diamonds

Lab: Final Testing – A person who successfully passes the final exam will earn a GHI Certificate or a Letter of Completion if final exam is not taken/passed.