Next Diamond Course Rough Diamond Grading and Evaluation : April 17th Course. Book Now.

2-week course that teaches you how to sort rough diamonds into different categories, according to various criteria such as size, colour, clarity and shape

Sawable and makeable  secrets revealed. The course focuses on practice with a sound theoretical background.

Additionally you will learn how to maximize the yield of a polished diamond starting from the rough and how the Sarin (Cut) can help you make the best decision.

How to calculate rough diamond prices will be shared as well as using the internationally recognized Rapaport price list .

After passing the practical test, you are ready for a career in the rough diamond industry. Leads to “The Corlia Roberts Diamond Education College” certificate

Duration 2 weeks (Johannesburg) Entrance Requirements  18 plus Speak English or French

Who is it for Rough diamond sorters, Diamond manufacturers, Traders, Appraisers, Jewelers

Max. number of students  4

You will learn • How to handle rough diamonds (weighing, counting, sieving, listing, store….) • Exercise on quality – size – shape/models – colour – cleaving, sawing and polishing possibilities • Diamond morphology • Diamond geology and mining • How to maximize the value of rough diamonds • Rough-to-polished conversion processes, using different techniques with pros and cons based on quality and size of rough diamonds • Rough diamond planning: theory and practice • Understand variables when using price lists. • Visit of a diamond polishing factory • Final examinations

Price USD$ 1000  / R8500.00 local SA Residence

Time table • 8.45 AM to 1.45 PM

Exams Practical and  exam (last day 9 AM – 12.30 PM)

Language English, French  Yours to keep • Manual • Toolset (Optional )•



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