Diploma in Diamond Grading (D.D.)
|Duration||3 1/2 Months|
|New Batch Commences||January, April, August, every year. (Tentative Dates)|
|Timings||10.00 a.m. to 1.00 p.m.|
|Lab Deposit (Refundable)||–|
|Minimum Qualification||Matriculation or equivalent (Completion of Gemmology Course D. G; and/or F.G.A. (London); G.G. (USA); D.Gem. G. (Germany) is preferred).|
|Medium of Instruction||English|
|Attendance||100% in practicals and 80% in theory is compulsory.|
|Examinations||Theory, Oral and Practical.|
|Percentage of Passing||Minimum 70% in theory/oral examination and 100% in practical examination. Home work assignments and weekly tests will also be taken into account. 90% and above in theory and 100% in practicals qualify for a distinction.|
|Re-examination||Unsuccessful students wishing to re-appear for the next examination will have to pay the examination fee of Rs. 1,000/-.|
|Certificate||On successful completion of the course a Diploma is awarded.|
SYLLABUS of DIAMOND COURSE
1. SHORT TERM CERTIFICATE COURSE IN 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)
2. SHORT TERM CERTIFICATE COURSE IN 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