Diamond grading & Sorting (Theory)

Paper Code: 
25MJD 421
Credits: 
4
Contact Hours: 
60.00
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, stimulants and their identification, natural inclusions, polishing, faceting, clarity &color grades.

 

Course Outcomes: 

Learning outcomes (COs):

Course

Learning outcomes

(at course level)

Learning and teaching strategies

Assessment

Strategies

COURSE Code

COURSE Title

 

25MJD   421

 

Diamond Grading &Sorting

 

CO93: Aquent with history of diamond, sources and mining.

CO94: Apply basic gemological instruments to identify the natural, synthetic, manmade and stimulants diamond. and  Learn about Impurities in rough to finished diamonds , their cause and effect.

CO95: Explore  the different cuts &color in diamonds

CO96: Examine  5c’s of diamond and the use of the Rappaport Diamond Price List and the International diamond price structure.

CO97:  Examine Diamond crystallography, different varieties of diamond crystals. Structural defects and the internal structure of diamond crystals and their physical and optical properties of diamond.

CO98 : Contribute effectively in course-specific interaction

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

 

12.00
Unit I: 
History of Diamond

·   The Dark Ages, The Middle Ages &recent times

·   Mining

·   Sourcing

Famous diamonds

12.00
Unit II: 
Diamond simulants
  • Manmade Diamond
  • Simulants
  • CVD
  • CZ
  • treatment in diamond

 

12.00
Unit III: 
Diamond Cutting and Polishing &Grading
  • Instruments used for grading and sorting of diamonds
  • Importance of cutting, grading and sorting of diamonds

 

12.00
Unit IV: 
Physical and optical Properties of Diamonds
  • 5 -c's –Color, Cut, Clarity, Carat& Certification
  • Specific gravity
  • Hardness
  • Cleavage
  • Simulation / Synthetic
  • Crystal system in Diamond
  • Color formation
  • White, Pink, Green, Yellow, and Blue &Champagne Diamonds

 

12.00
Unit V: 
Optical Properties of Diamonds

·Reflection

·Dispersion

·Faceting

 

  • Luster
  • Fluorescence
  • Brilliance
  • Certification

 

Essential Readings: 
  • Mathur,A. (2007). Diamond: Eternal Fire The Indian Diamond Tradition,:Rupa& Co.
  • Newman,R. (2017). Diamond Ring: Buying Guide,losangeled : International jewellery Publication
  • Balfour, I. (2007). Famous diamonds. Woodbridge,Suffolk. : Antique Collector's Club Ltd.
  • Verna, P.T. (2001). Diamond Grading ABC The Manual, Rubin & Son

 

References: 
  • Spear, K. E., &Dismukes, J. P. (Eds.). (2004). 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: 
2025-2026
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