Diamond Education College; Opening the doors to the diamond industry
Diamond Education College; A cut above the rest
Diamond Education College; Add a sparkle to your curriculum vitae

Rough Diamond Evaluation and Grading Course

  1. Duration of Rough Diamond Evaluation and Grading Course

    It is a 2 week course - full day from Monday to Friday, 08:00 to 14:00.

  2. Commencement

    The Rough Diamond Evaluation and Grading Courses will be run as follows:-

    Rough Diamond Evaluation and Grading Courses
    Start DateEnd DateStatus
    10 November 202510 Nov 202521 November 202521 Nov 2025Vacancies
    24 November 202524 Nov 202505 December 202505 Dec 2025Vacancies
    08 December 202508 Dec 202519 December 202519 Dec 2025Vacancies
    05 January 202605 Jan 202616 January 202616 Jan 2026Vacancies
    19 January 202619 Jan 202630 January 202630 Jan 2026Vacancies
    02 February 202602 Feb 202613 February 202613 Feb 2026Vacancies
    16 February 202616 Feb 202627 February 202627 Feb 2026Vacancies
    02 March 202602 Mar 202613 March 202613 Mar 2026Vacancies
    16 March 202616 Mar 202627 March 202627 Mar 2026Vacancies
    30 March 202630 Mar 202610 April 202610 Apr 2026Vacancies
    13 April 202613 Apr 202624 April 202624 Apr 2026Vacancies
    28 April 202628 Apr 202608 May 202608 May 2026Vacancies
    11 May 202611 May 202622 May 202622 May 2026Vacancies
    25 May 202625 May 202605 June 202605 Jun 2026Vacancies
    08 June 202608 Jun 202619 June 202619 Jun 2026Vacancies
    22 June 202622 Jun 202603 July 202603 Jul 2026Vacancies
    06 July 202606 Jul 202617 July 202617 Jul 2026Vacancies
    20 July 202620 Jul 202631 July 202631 Jul 2026Vacancies
    03 August 202603 Aug 202614 August 202614 Aug 2026Vacancies
    17 August 202617 Aug 202628 August 202628 Aug 2026Vacancies
    31 August 202631 Aug 202611 September 202611 Sep 2026Vacancies
    14 September 202614 Sep 202625 September 202625 Sep 2026Vacancies
    28 September 202628 Sep 202609 October 202609 Oct 2026Vacancies
    12 October 202612 Oct 202623 October 202623 Oct 2026Vacancies
    26 October 202626 Oct 202606 November 202606 Nov 2026Vacancies
  3. Course Fee

    The course fee is R16,000.00 inclusive of VAT.
    Off-site training sessions can be arranged provided there are a minimum of 10 students per course. Please contact our offices for more information.

    To ensure personal attention, each course is limited to a maximum of ten students.

    A registration deposit of 50% is payable to secure the student's place. Check availability of course date before paying a deposit. Acceptance will only be confirmed upon receipt of the required deposit paid into our bank account and proof provided.

  4. General Course Objectives
    1. To prepare the student to become proficient in every technique involved in the evaluation and grading of diamonds.
    2. To teach the student how to sort and buy diamonds both in the rough and cut state and how colour, imperfection and shape affect prices.

  5. Course Outline
    Students will learn:
    1. the correct use of a loupe.
    2. the different varieties of diamond crystals and polycrystalline aggregates in diamonds using real diamonds as well as wooden and plastic models.
    3. the identification of imitation (fake) diamonds.
    4. structural defects and the internal structure of diamond crystals including marks, inclusions, naart, maccles and stress.
    5. optical, mechanical, electrical, thermal and chemical properties of diamond crystals.
    6. the study of impurity centres in rough diamond crystals, their cause and effect.
    7. how to select diamonds for fancy shapes, determining their ultimate form whilst in the rough stage.
    8. how to determine colour in diamonds, both natural and artificial, and its effect on buying and selling.
    9. how to select and sort rough diamonds for purity, colour, size, shape and any unusual qualities.
    10. how to determine whether a whole rough diamond is to be cleaved, sawed or retained as is.
    11. classification of rough gems and industrial diamonds.
    12. use of a polariscope when analyzing stress and strain within the internal molecular structure of rough diamonds.
    13. sketching of rough diamonds pinpointing impurities within the diamond.
    14. use of a Moe gauge to estimate weight recovery as well as estimating weight recovery percentages.
    15. pricing of rough diamonds using the Rapaport Polished Diamond Price List and the ADTEC Rough Diamond Guideline Price List.
    16. use of OGI planning scanner & computer.

  6. Certificate

    There will be a practical exam on completion of this course, and the student will receive a certificate stating that they have successfully completed the Rough Diamond Evaluation and Grading Course at the Diamond Education College.

  7. Applications
    1. Applications must be made well in advance because of the limited number of students that can be accommodated at any specific intake.
    2. Admission is solely at the schools discretion.
    3. Full fee must be paid before commencement of the course.
    4. Fees are not refundable. Postponing of the course is possible only with two weeks advance notice.

  8. Equipment

    All equipment for use during the course will be provided and remain the property of the Diamond Education College.

  9. Accommodation and Transportation

    Students must arrange their own transport and accommodation.

  10. Discipline

    Students will be subject to the disciplinary code of the Diamond Education College. Any student who is in breach of its code will be liable to suspension or expulsion without refund of fees paid.

  11. Language

    The course is presented in English.