Corlia Roberts – CXD International

Welcome to Our Digital Campus!

We’re excited to have you join us on this journey into the fascinating world of diamonds. Whether you’re looking to launch a career, expand your expertise, or start your own diamond business, our online courses provide the essential knowledge and skills you need to succeed. Learn from industry experts and gain practical, real-world insights—all at your own pace.

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Our Approach

For over two decades, we have been at the forefront of the diamond industry, shaping its landscape and setting the standard for excellence. Since our establishment in 1998, we have remained steadfast in our commitment to quality, integrity, and innovation, earning the trust and respect of clients and colleagues alike.

From our humble beginnings to our current standing as a respected leader in the field, our journey has been defined by a relentless pursuit of excellence. With a deep-rooted passion for diamonds and a dedication to skills transfer, we have consistently delivered exceptional services that exceed expectations.

At the heart of our business lies a steadfast commitment to integrity and transparency. Guided by ethical principles and a deep respect for our industry, we have built enduring relationships based on trust, honesty, and mutual respect.

We offer courses that cover all aspects of grading, evaluating, sorting, pricing, buying, selling, trading, and investing in both rough and polished diamonds. So you can rest assured that you will be exposed to the secrets of trading diamonds in an ever-evolving industry.

We are a leading institute for education in the diamond industry, We have launched a series of online courses, including live one-on-one online training via zoom.  

Corlia Roberts Institute of Diamonds is recognized by the South African Diamond and Precious Metals Regulator (SADPMR)

Our Online or In-Person Courses:

  • Rough Diamond Evaluation – Master the art of identifying, grading, and valuing rough diamonds.
  • Polished Diamond Grading – Understand the 4Cs and professional diamond grading techniques.
  • Jewelry Manufacturing – Explore the craftsmanship behind fine jewelry design and production.
  • Gold & Precious Metals – Learn the essentials of evaluating and trading gold and other precious metals.

Why Choose Our Digital Campus?

  • Expert-Led Courses – Learn from experienced diamond professionals with decades of industry knowledge.
  • Flexible Learning – Study at your own pace with 24/7 access to our comprehensive learning modules.
  • Industry-Recognized Certification – Earn an internationally recognized certificate to boost your credentials.
  • Business-Focused Training – Gain practical insights into diamond evaluation, trading, and licensing.
  • Personalized Support – Have direct access to expert guidance and a supportive learning community.

Course Highlights

Rough Diamond Evaluation

  • Understand the formation and characteristics of rough diamonds.
  • Learn to identify, grade, value and price rough stones.
  • Master techniques used by professionals in the diamond trade.

Polished Diamond Grading

  • Explore the 4Cs (Cut, Color, Clarity, and Carat Weight) in depth.
  • Gain knowledge of grading and valuation.
  • Learn how to assess diamonds based on their chemical and optical properties.

Jewelry Manufacturing

  • Discover the artistry behind fine jewelry design and craftsmanship.
  • Learn about setting techniques, metalwork, and gemstone placement.
  • Understand the step-by-step process of creating high-quality jewelry.

Gold & Precious Metals

  • Dive into the history, value, and properties of gold and other precious metals.
  • Learn essential evaluation and trading techniques.
  • Gain insights into refining, hallmarking, and investment strategies.

Meet Your Instructors

Our instructors are passionate about sharing their knowledge and ensuring you gain the skills and confidence to excel in the diamond world.

Corlia Roberts – With decades of experience in the diamond industry, Corlia has been a pioneer in diamond education. Her expertise in diamond evaluation, grading, and business strategies has helped countless students succeed in the trade.

Xanchia Roberts – Carrying forward the legacy of diamond education, Xanchia brings a modern approach to the industry. She specializes in diamond trading, licensing, and empowering entrepreneurs to launch their own diamond businesses.

Melissa Hattingh – Passionate about seeing students succeed, Melissa is dedicated to providing training and coaching that ensures every student gains the skills and confidence needed to thrive in the industry.

License Assistance

Starting your own diamond business? We’re here to guide you every step of the way!

  • Diamond Dealer License
  • Diamond Beneficiation License
  • Precious Metal’s Jeweler’s Permit
  • Precious Metals Refining License
apply for a diamond dealer license

Get Started Today!

Chat with us on WhatsApp to find the perfect course for you and take the first step toward your diamond future. Whether you want to start your own business, enhance your career, or gain specialized expertise, we’re here to help.

Please complete the online enrollment form HERE and the accounts department will forward you an invoice.

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