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Certificate for Module (Diamond Grading)
證書(單元 : 鑽石評級)

CEF Reimbursable Course

CEF Reimbursable Course

Course Code
Application Code

Study mode
Start Date
To be advised
58 hours
Cantonese, suppl with teaching materials in Eng
Course Fee
Course Fee : HK$28,000
How to Apply


The programme is designed for diamond traders, diamond experts, appraisers and graders, jewellers and designers, diamond and jewellery lovers, sales managers, and buyers. Students will study the 4C’s: Carat, Colour, Clarity and Cut, and determine the quality and value of a stone. Students will also learn identification methods to detect the most common stimulants, and be able to operate the professional microscope and other gemological equipment appropriately.  

Programme Details

On completion of the programme, students should be able to:

1. describe the properties of diamonds and the quality grading of polished diamonds (The 4C’s);

2. use diamond microscope and other gemmological equipment to conduct a systematic examination of a diamond;

3. identify the most common diamond imitations.  



Basic concepts of diamond

  • What is diamond?
  • Properties of diamond
  • The International Diamond Council (IDC)

Formation, exploration and manufacturing

  • Introductory geology
  • Exploration and exploitation
  • Sorting of diamonds
  • Manufacturing of diamonds
  • Shapes

Quality grading of polished diamonds

  • Quality grading of polished diamonds (The 4C’s)
  • Materials and instruments


  • Metric carat
  • IDC rounding rules
  • Carat and diamond value


  • IDC rules for clarity grading
  • Comparison between different grading systems
  • Internal and external characteristics
  • Diamond examination
  • Systematic clarity examination of a polished diamond

Clarity Grading

  • Clarity grading by evaluation inclusions
  • Clarity grading using reference diamonds
  • Supplementary methods for clarity grading

Colour and colour grading of diamond

  • Light and colour
  • Source of colour in a diamond
  • Practical colour grading
  • Fluorescence


  • History of cut
  • HRD Antwerp cut grading system
  • First parameter: proportions
  • Second parameter: symmetry
  • Third parameter: polish
  • Dimensions of a polished diamond
  • Cut grade for fancy shapes
  • Hearts and arrows
  • Premium Ideal Cut

Diamond imitations

  • Introduction and history
  • The most important diamond imitations
  • Identification methods

Synthetic diamonds and treatments

  •  Synthetic diamonds
  •  Colour treatments
  •  Clarity treatments


There are two examinations in this programme, a written examination and a practical examination. 

Assessment Type and Weighting

Assessment Format and Duration

Pass Mark

Written examination (50%) Multiple choice (40 questions) [ 1-hour ]

60% and above

Practical examination (50%)

Examine and grading a total of 9 diamonds [ in 2 separate days, total 7 hours ]

75% and above

Students who have achieved not less than 70% attendance, obtain ‘Pass’ on BOTH Written examination and Practical examination will be awarded within HKU system through HKU SPACE the Certificate for Module (Diamond Grading)  證書(單元 : 鑽石評級). 

Note: Students who fail the examination may apply to resit the examination with an additional fee. 

Students who pass the examination will also be awarded the ' HRD Antwerp Certified Diamond Grader ' certificate conferred by HRD Antwerp.



Please click here to apply online.

Application Code -  

Days / Time

  • Please refer to "Class Details" section


Lecture: 18 hours

Laboratory: 40 hours

  • 18 meeting(s)
  • 3-4 hours per meeting
  • Weekends: 7:00 pm - 10:00 pm
  • Saturday : 9:00 am - 1 :00 pm
Application Code MK081A -

Class Details

Tentative Timetable



Course Fee
  • Course Fee : HK$28,000

Entry Requirements

Applicants shall be at least 18 years of age.


  • The CEF Institution Code of HKU SPACE is 100
CEF Courses
Certificate for Module (Diamond Grading)
COURSE CODE 36C136684 FEES $28,000 ENQUIRY 2867-8313
Continuing Education Fund Continuing Education Fund
This course has been included in the list of reimbursable courses under the Continuing Education Fund.

Certificate for Module (Diamond Grading)

  • This course is recognised under the Qualifications Framework (QF Level [3])


Application Form Download Application Form

Enrolment Method
Payment Method
1. Cash, EPS, WeChat Pay Or Alipay

Course fees can be paid by cash, EPS, WeChat Pay or Alipay at any HKU SPACE Enrolment Centres.

2. Cheque Or Bank draft

Course fees can also be paid by crossed cheque or bank draft made payable to “HKU SPACE”. Please specify the programme title(s) for application and the applicant’s name.. You may either:

  • bring the completed form(s), together with the appropriate course or application fees in the form of a cheque, and any required supporting documents to any of the HKU SPACE enrolment centres;
  • or mail the above documents to any of the HKU SPACE Enrolment Centres, specifying  “Course Application” on the envelope.  HKU SPACE will not be responsible for any loss of payment sent by mail.
3. VISA/Mastercard

Applicants may also pay the course fee by VISA or Mastercard, including the “HKU SPACE Mastercard”, at any HKU SPACE enrolment centres. Holders of the HKU SPACE Mastercard can enjoy a 10-month interest-free instalment period for courses with a tuition fee worth a minimum of HK$2,000; however, the course applicant must also be the cardholder himself/herself. For enquiries, please contact our staff at any enrolment centres.

4. Online Payment

Online application / enrolment is offered for most open admission courses (course enrolled on first come, first served basis) and selected award-bearing programmes. Application fees and course fees of these programmes/courses can be settled by using "PPS by Internet" (not available via mobile phones), VISA or Mastercard. In addition to the aforesaid online payment channels, continuing students of award-bearing programmes, if their programmes offer online service, may also pay their course fees by Online WeChat Pay, Online Alipay and Faster Payment System (FPS). Please refer to Enrolment Methods - Online Enrolment  for details.


  • If the programme/course is starting within five working days, application by post is not recommended to avoid any delays. Applicants are advised to enrol in person at HKU SPACE Enrolement Centres and avoid making cheque payment under this circustance.
  • Fees paid are not refundable except under very exceptional circumstances (e.g. course cancellation due to insufficient enrolment), subject to the School’s discretion. In exceptional cases where a refund is approved, fees paid by cash, EPS, WeChat Pay, Alipay, cheque or PPS (for online payment only) will normally be reimbursed by a cheque, and fees paid by credit card will normally be reimbursed to the payment cardholder's credit card account.
  • In addition to the published fees, there may be additional costs associated with individual programmes. Please refer to the relevant course brochures or direct any enquiries to the relevant programme team for details.
  • Fees and places on courses cannot be transferrable from one applicant to another. Once accepted onto a course, the student may not change to another course without approval from HKU SPACE. A processing fee of HK$120 will be levied on each approved transfer.
  • Receipts will be issued for fees paid but HKU SPACE will not be repsonsible for any loss of receipt sent by mail.
  • For payment certification, please submit a completed form, a sufficiently stamped and self-addressed envelope, and a crossed cheque for HK$30 per copy made payable to "HKU SPACE" to any of our enrolment centres.