Master the Art and Science of Diamond Grading
This in-depth class is designed to help students develop the essential techniques and professional judgment needed to confidently grade and evaluate diamonds with accuracy and consistency. Over the span of twenty contact hours, participants will explore both the theoretical foundations and practical applications of diamond assessment.
Approximately half of the course is devoted to hands-on lab sessions, giving students the opportunity to apply what they’ve learned in lectures and readings through guided practice and personalized instruction.
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​During these lab sessions, students work directly with a variety of diamond simulants and treated stones, including laser-drilled and fracture-filled examples. Through close observation and comparison, participants learn to recognize the subtle yet critical characteristics that distinguish natural diamonds from those that are treated or synthetic. Emphasis is placed on identifying the telltale indicators of different treatments and understanding how they affect a diamond’s beauty, durability, and value.
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The course also delves into the economic aspects of diamond trading. Students engage in thoughtful discussions about value assessment, pricing strategies, and cost-benefit analysis, gaining insight into how various factors influence market value within the global jewelry industry.
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In addition, the curriculum introduces students to the regulatory standards and best practices that guide ethical trade and consumer transparency. Key FTC (Federal Trade Commission) and CIBJO (World Jewellery Confederation) guidelines are covered to ensure students understand the legal definitions, disclosure requirements, and international protocols that protect both professionals and consumers in the marketplace.
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By the end of the course, participants will not only have strengthened their technical grading abilities but also gained a deeper appreciation of the complex interplay between craftsmanship, science, and commerce that defines today’s diamond industry.
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Click here to view the course syllabus.​ All students who complete this course will receive a Certificate of Completion
Details: Courses are conducted in downtown Chicago and are offered during either the day-time and evenings for the convenience of the student. Courses are conducted by two industry veterans and class sizes are restricted to a maximum of fifteen students to assure a high student-to-teacher ratio. PGSL will teach classes wherever there is demand for them. Contact our staff for road course scheduling.