1. SHORT TERM CERTIFICATE COURSE IN GEM IDENTIFICATION
Hands on Practical Approach with theory for clarity in concepts
- 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
- 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
(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)
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
- Chemical Physical & Optical Properties of a diamond
- Manufacturing Process
- Introduction to rough diamond assorting and its importance
- Sorting Systems : The Classification of rough diamonds
- Gem diamond – Near Gem diamond – Industrial diamond
- Makeable – Sawable – Cleavables
- External Features of a rough diamond :
- Twin Crystals
- Combination of forms
- Surface Markings
- Other relevant features
- Internal Features of a rough diamond :
- Inclusions found in diamonds
- Indian Terms for inclusions
- Cut / Shape
- Expected Inclusions after Cutting and Polishing
- Planning of Rough Diamonds :
- Calculation of yield in rough and price per carat of cut and polished diamonds.
- Understanding the manufacturing process from rough to finish
- Cleavables, Yield, Makeables – Practical
- Operation Clean
- Fine Inclusions
- Medium Inclusions
- Heavy Inclusions
- Mix Stones
- 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