ATHE Level 3 Certificate, JET Professional Jewellers (JET 2)

At the NAJ we are committed to helping you build a brighter future with professional development, insight and opportunity.

This qualification builds on the content of the JET Certificate (JET 1), taking skills, knowledge and professionalism to the next level.

Our online qualification allows you to study wherever you are in the world. Dedicated tutors provide support and guidance to help you complete your assignments in-line with your personal timetable.




Suitable for: Students wanting a deeper knowledge of the industry

Duration: 12 months (can be completed sooner)

Assessment: Seven written assignments, followed by an in-depth final research project

Qualification: ATHE Level 3 Certificate, JET Professional Jewellers (JET 2). On successful completion of the qualification, you will be invited to attend our annual Awards Ceremony, which takes place at Goldsmith’s Hall in London, where your Certificate will be presented.

Fee: Non Member £930+VAT, Member £715+VAT .


JETDiploma enrolement



A combination of six mandatory modules and seven optional modules will provide more experienced jewellery industry professionals with detailed training on jewellery, gemstones and precious metals as well as specialist areas including services and repairs, valuations, security and manufacturing.

ATHE Level 3 Certificate, JET Professional Jewellers (JET 2) will:

  • Give jewellery industry staff a detailed knowledge of gemstones and precious metals as well as introducing specialist career pathways including jewellery valuation and pawnbroking
  • Value and recognise jewellery industry staff by giving them access to training to enhance their career and professional development
  • Help recruitment and retention into the jewellery industry by signposting a career pathway to help staff along their jewellery journey
  • Provide an engaging online learning environment that will be equally accessible to both part-time and full-time staff.


JET Diploma TAG

Core Modules

History of Jewellery

      • Development of jewellery design through the ages
      • Key uses and characteristics of jewellery in different time periods
      • Beliefs about the properties of jewellery and gem stones

Gold, Platinum, Palladium and Silver

      • Physical and optical properties of precious metals
      • History of discovery and production of precious metals
      • Purpose and impact of the fairtrade gold standard
      • Strengths and limitations of the precious metals for jewellery design and manufacture


      • Factors that affect a diamond’s value
      • Optical and physical properties of a diamond
      • Development of the diamond cut
      • Ethical sourcing of diamonds


      • Mineral and organic gemstones
      • Key features of each main gemstone family
      • Optical and physical properties of gemstones
      • Factors that affect a gemstone’s value
      • Commonly accepted coloured gemstone treatment


      • The UK hallmarking system
      • Modern assaying and hallmarking techniques
      • Different hallmarks
      • What hallmarks can tell us about an item
      • Current hallmarking conventions and exemptions

Better Business

      • The importance of doing better business
      • Key organisations and initiatives that support better business in the jewellery industry

Optional Modules


  • Design inspirations and design approaches of different designers
  • Develop initial design, manufacture and business plans for a range of jewellery
  • The `bespoke jewellery’ design process
  • The role of `CAD-CAM’ in jewellery design


  • Historical developments in the Swiss watch industry
  • Different watch types and features
  • Common watch repairs

Synthetic Diamonds, Diamond Treatments and Simulants

  • Advantages and disadvantages of synthetic diamonds
  • Rules of disclosure for synthetic diamonds
  • Distinguishing features of diamonds and diamond simulants
  • Diamond treatments 

Services and Repairs

  • Taking in and returning watches and jewellery following repair
  • Preparing notes and repair instructions for a range of jewellery items and watches


  • Setting up an in-house valuation service
  • Maximising sales from a valuation service
  • Understanding why a valuation might be required
  • Different types of valuation

Store Design and Display

  • Types of store and display lighting
  • Using design and display features to help promote the store's its unique selling point
  • Putting a display together
  • Components of effective display design
  • Key factors for an eye-catching display


  • The law as applied to the retail jewellery industry
  • Precautions required to guard against the possibility of handling stolen goods
  • The law as applied to jewellery repair and alteration
  • Security checks for high value cash payments
  • Consumer rights when purchasing jewellery 


  • The history of pawnbroking
  • Jewellery as a prime pledge
  • Jewellery identification skills
  • Taking in a pawn and agreeing a loan
  • What happens to the pawn when a loan is not paid off

Jewellery Manufacturing

  • Formative, subtractive and additive manufacturing
  • The lost-wax casting method
  • Designing and creating the casting model
  • Manufacturing different types of jewellery items


  • The history of silverware
  • Silversmithing techniques


  • Security checks required for credit card payments
  • Personal safety guidelines in the event of an armed robbery
  • Security rules to protect staff and product on the shop floor

 157 jet diploma silversmithing

Entry Requirements

Either the JET Certificate (JET 1) or two years’ full-time work experience in the jewellery industry (or three years part-time); at least 5 GCSEs or 'O' Levels (or equivalent international qualifications).  



The ATHE Level 3 Certificate, JET Professional Jewellers (JET 2) is part of a suite of 3 qualifications and this leads nicely on to the JET Management Diploma. Graduates are encouraged to apply for Personal Associate Membership which offers many benefits including the use of the initials P.J. Dip. after their name. 

JETDiploma stat



Non-Member £930+VAT

Member £715+VAT

All bookings are subject to the NAJ Terms and Conditions.



Full or part-funding may be available via Association Financial Support.



Enrolments will be processed monthly after the enrolment deadline (15th of each month) and may take up to 10 working days. 




Download booking form*  

*to secure your place email your form to


Too busy to complete your form or need more information?

Email the team

Call 07741554011



JET Diploma Walsh Bros

Frequently Asked Questions

What is the difference between the JET Diploma and the ATHE Level 3 Certificate, JET Professional Jewellers (JET 2)?

The only real difference is the name – we have had to change the name to fit in with the requirements of the Regulated Qualifications Framework, where the words `certificate’ and `diploma’ relate to the size of the qualification rather than the level. So, in actual fact, in terms of size the `JET Diploma’ takes about 170 hours, which puts it firmly in the Certificate camp and not the Diploma camp, which is for qualifications that take 370 hours or more!

What is the ATHE?

The ATHE (Awards for Training and Higher Education) is an awarding organisation (similar to City and Guilds, AQA or Edexcel) that specialises in supporting bespoke professional and industry-standard qualifications such as the NAJ’s JET qualifications.

What is the ATHE’s role?

The ATHE helped the NAJ to get the JET 2 qualification recognised on the Regulated Qualifications Framework (RQF). Once the qualification is on the RQF, it is nationally and internationally recognised. This means that employers and colleagues will easily recognise the size, level and value of the qualification that you have achieved.

What does Level 3 mean?

The qualification `level’ relates to the level of stretch and challenge that the qualification demands. The JET Professional Jewellers (JET 2) qualification is Level 3 and demands a similar level of challenge to an `A’ level.

Why is the full title JET Professional Jeweller’s 'Certificate'?

The addition of the word `Certificate’ in the title, helps people to understand the size of the qualification. A Certificate can take anywhere between 121 and 369 hours of study! The ATHE Level 3 Certificate, JET Professional Jewellers (JET 2) will take around 170 hours to complete.

What does RQF recognition mean?

Regulated Qualifications Framework (RQF) recognition comes with a series of responsibilities for the NAJ, designed to ensure that the student’s learning is of the highest possible standard. The awarding organisation (Awards for Training and Higher Education), on behalf of Ofqual (the national qualifications’ regulator), will make regular external checks to ensure that assessment is being carried out to nationally recognised standards and that student learning is being supported by well-designed learning resources and assignments. You can be assured that the qualifications you pursue with the NAJ, will be of the best quality possible.