Students around the globe turn to MDI® for the knowledge, skills, and credentials that launch successful gem and jewelry career.
Welcome to MDI®
Master of Diamonds Institute® Laboratories
A tradition of Science and Education
MDI® is the leading source of knowledge, standarts, and education in gems and jewelry...
Expertise
MDI® laboratories are staffed by expert scientists and gemologists working with state-of-the-art technology.
Expertise Precision
Advanced instrumentation and experienced visual observations deliver consistently accurate results.
Expertise Objectivity
All gemstones are analyzed under complete client anonymity to ensure objective analysis.
Expertise Integrity
As a non-profit organization, MDI® operates independently of commercial and private interests, political lobbies and advocacy groups.
Expertise Global Standard
MDI® reports are the benchmark of analysis and grading, and those who buy, sell or curate the world’s most important gems rely on MDI®.
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The world leader in gemological research, MDI®'s breakthrough discoveries deepen our understanding of gemstones and the world.
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Through research, education, and unbiased gem grading and anlaysis, MDI® strives to protect the gem and jewelry buying public by setting global quality standarts.