Education

Introduction to Diamond Grading

Professional Certification

Professional Certification · 5 days + assessment · In person / hybrid

Five days of training to unlearn the industry’s common misconceptions and reach the high standards recognised worldwide. Built on international IDC standards, JTR’s Introduction to Diamond Grading enables you to make clear, confident decisions on colour and clarity.

Overview

Introduction to Diamond Grading explains the 4 C’s in depth and gives you the confidence that comes with real knowledge when you face your customers.

Who it’s for

Sales professionals, distributors, retail teams and customer representatives selling JTR equipment, grading services and detection technology.

Prerequisites

Open to participants aged 18 and over.

What you’ll be able to do

  • Locate inclusions in a diamond with ease using a loupe
  • Decide colour and clarity grades quickly through hands-on diamond practice
  • Clearly understand the 4 C’s as stated on international grading reports
  • Calculate diamond prices with the Rapaport price list
  • Interpret natural, simulant and synthetic diamond analyses with the JTR REVEAL 2S diamond detector
  • Easily check whether returned or exchanged jewellery still holds natural diamonds
  • Deepen your command of the jewellery industry

Curriculum

1. Gemology

  • Introduction to gemology and core concepts
  • Precious stones and the place of diamond among them; the Mohs hardness scale
  • What is diamond? Its chemical composition and bonding structure
  • What is a brilliant? Its parts and facets
  • The difference between a brilliant and a diamond
  • Viewing directions for a brilliant and the principle of systematic examination

2. Overview of the 4 C’s (Carat, Clarity, Colour, Cut)

  • Carat weight and IDC international weighing rules
  • Measurement techniques and the logic of theoretical carat-weight calculation
  • The grading environment and examination discipline
  • The colour grading system and comparison against master stones
  • The clarity grading system and inclusions
  • Loupe examination techniques

3. Fluorescence

  • Fluorescence analysis and classification
  • Cut grades explained
  • Examining fancy-shaped diamonds and the systematic analysis of fancy cuts

4. Identifying Diamonds

  • Diamond simulants and how to separate them
  • Treated diamonds and risky practices
  • Synthetic diamonds: HPHT and CVD fundamentals
  • Reading grading reports: technical data, comments and verification

5. Building Trust with JTR Technology

  • Presentation of the JTR REVEAL 2S diamond analysis instrument
  • Grading reports and laboratory services
  • Loupe S
  • The MyReveal app and digital services
  • Hands-on examination and practical exam