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Short Term Courses

1. Short Term Certificate Course in GEM Identification

Hands on Practical Approach with theory for clarity in concepts

SYLLABUS:

  • Need & introduction for Gemmology
  • Visual Observation and Sight Identification of Gems
  • Gem testing Instruments and their application
  • Gemstone treatments and synthetics
  • Rubies and red simulants
  • Blue Sapphires and their simulants
  • Yellow Sapphires and their simulants
  • Emeralds and Green simulants
  • Hessonite Garnet and Simulants
  • Chrysoberyl Cat’s Eye and Simulants
  • Mixed Identification

2. Polished Diamond Grading

SYLLABUS:

  • Need for international grading
  • 4 C’s grading as per international standards
  • Comparative grading systems
  • Round Brilliant Cut, Parts and Comparative Ideal Cuts
  • Carat Estimation
  • Clarity Grading
  • Colour Grading
  • Cut Grading Overview – Styles of Cut, Proportions, Polish & Symmetry
  • Identification

Duration: 30 hours – 10 days
Days: Mon – Fri.
Timings: 2.30 pm – 5.30 pm (daily 3 hours for 10 days) (Monday to Friday)

3. Rough Diamond Assortment

  • How and Where are diamonds formed?
  • The characteristics of a diamond
  • Identification criteria of a diamond
  • Diamond Journey From Mines to Market
  • Mining and Extraction
  • Big Mining Corporations & Sights
  • World famous diamonds
  • Diamond Crystal Structure and Properties
  • Crystallography
  • Chemical Physical & Optical Properties of a diamond
  • Manufacturing Process

Practical Approach

  • Use of diamond scales for weighing rough diamonds
  • How to use diamond sieves
  • Pricing Information
  • How to sort a packet of rough diamonds in a tray
  • At a Glance to judge, how good or bad is a diamond packet
  • Understanding a single packet of stones of rough diamonds by the use of light and optivisor
  • Mixed Parcel : Practical
(Applicable for a batch of minimum 2 students)
Duration : 30 hours – 10 days Days : Mon – Fri.
Timings : 2.30 pm – 5.30 pm (daily 3 hours for 10 days) (Monday to Friday)
  1. Introduction to rough diamond assorting and its importance
  2. Sorting Systems : The Classification of rough diamonds
    • Gem diamond – Near Gem diamond – Industrial diamond
    • Makeable – Sawable – Cleavables
  3. External Features of a rough diamond :
    • Shapes
    • Twin Crystals
    • Combination of forms
    • Surface Markings
    • Other relevant features
  4. Internal Features of a rough diamond :
    • Inclusions found in diamonds
    • Indian Terms for inclusions
    • Colour
    • Cut / Shape
    • Yield
    • Expected Inclusions after Cutting and Polishing
    • Grade
    5. Planning of Rough Diamonds :
    • RBC
    • Fancy
    • Sawables
    • Cleavables
    • Calculation of yield in rough and price per carat of cut and polished diamonds.
    • Understanding the manufacturing process from rough to finish
    6. Cleavables, Yield, Makeables – Practical
    • Clean
    • Operation Clean
    • Fine Inclusions
    • Medium Inclusions
    • Heavy Inclusions
    • Flat
    • Fancy
    • Rejection
    • Natts
    • Mix Stones
    • Sawables
    • Cleavables

GET IN TOUCH

022 - 23889232

marketing@giionline.com

The first Research & Development Laboratory in the field of Gemstones in India recognized by the Department of Science & Technology, Government of India as SIRO.

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