Diamond Grading Sorting

Paper Code: 
JWT 502
Credits: 
3
Contact Hours: 
45.00
Max. Marks: 
100.00
Objective: 

This course will enable the students to –

  1. Provide an understanding of physical and optical properties of diamonds, cutting and polishing 4-c's, simulants and their identification, natural inclusions, polishing, faceting, clarity & colour grades.

Learning outcomes (COs):

Course

Learning outcomes

(at course level)

Learning and teaching strategies

Assessment

Strategies

Paper Code

Paper Title

 

JWT 502

 

Diamond Grading Sorting

 

The students will –

 

CO88: Learn Diamond crystallography, different varieties of diamond crystals. Structural defects and the internal structure of diamond crystals.

CO89: Learn Impurities in rough diamonds, their cause and effect.

CO90: Determine colour in diamonds, both natural and artificial and its effect on buying and selling.

CO91: The use of the Rappaport Diamond Price List and the International diamond price structure.

 

Approach in teaching: Interactive Lectures, Discussion, Tutorials, Reading assignments, Demonstration, Team teaching

Learning activities for the students: Self-learning assignments, Effective questions, Seminar presentation, Giving tasks, Field practical

Class test, Semester end examinations, Quiz, Solving problems in tutorials, Assignments, Presentation, Individual and group projects

 

9.00
Unit I: 
History of Diamond

                                                                                                                                   

  • The Dark Ages, The Middle Ages &Recent Times
  • Mining
  • Sourcing
  • Famous diamonds

 

9.00
Unit II: 
Type of Diamond and Colour in Diamond

                                                                                    

  • Colour formation
  • White, Pink, Green, Yellow, and Blue &Champagne Diamonds
  • Colour treatment in diamond

 

9.00
Unit III: 
Diamond Cutting and Polishing &Grading

                         

  • Instruments used for grading and sorting of diamonds
  • Importance of cutting, grading and sorting of diamonds

 

9.00
Unit IV: 
Physical Properties of Diamonds

                                  

  • 4 -c's –Color, Cut, Celerity, Carat
  • Specific gravity
  • Hardness
  • Cleavage
  • Simulation / Synthetic
  • Crystal system in Diamond
  • Manmade Diamond
  • Simulants

 

9.00
Unit V: 
Optical Properties of Diamonds

                                                                               

  • Reflection

  • Dispersion

  • Faceting

  • Luster
  • Fluorescence
  • Brilliance
  • Certification

 

Essential Readings: 
  • Spear, K. E., & Dismukes, J. P. (Eds.). (1994). Synthetic diamond: emerging CVD science and technology (Vol. 25). John Wiley & Sons.
  • Neves, A. J., & Nazaré, M. H. (Eds.). (2001). Properties, growth and applications of diamond  IET.
  • Weinstein, M. (2013). Precious and semi-precious stones. Read Books Ltd.
  • Bourdier, F. (2006). The mountain of precious stones: Ratanakiri, Cambodia: essays in social anthropology. Center for Khmer Studies.
  • Schumann, W. (2009). Gemstones of the World. Sterling Publishing Company, Inc.

 

Academic Year: 
2021-2022
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