Alumni Chapter

Washington D.C. Chapter: Diamond Myths & Misunderstandings

Presented by Antoinette Matlins, PG, FGA

Antoinette Matlins will discuss the continuing and under-appreciated value of an ultraviolet lamp in distinguishing between natural & synthetic colorless (D-Z) diamonds as well as, other “facts" pertaining to diamonds and fluorescence that are myths and misunderstandings.

This presentation will be interactive and will demonstrate the mistakes many gemologists make when using an ultraviolet lamp, leading to erroneous conclusions. Participants will learn how to use a UV lamp correctly when checking diamonds (or other gems) for fluorescence and engage in a discussion of the other issues that are misunderstood when it comes to diamonds and fluorescence pertaining to beauty, color-grading, and valuation.

Gemstones, UV lamp and diamond “type spotters” for the synthetic diamond detection part of the presentation will be provided. Members should bring their Chelsea filters, calcite dichroscopes, and loupes (you will find the “new uses” fascinating and eye-opening).

Matlins is an internationally respected gem and jewelry expert, author and lecturer whose expertise is sought worldwide by clients who retain her to seek fine, rare or unusual gems and jewels for acquisition. She has written many books that have helped people, both consumers and professionals, to increase their understanding and enjoyment of jewelry and gemstones.

For More Information

Please contact the chapter leaders at
This event is free to paid members of the D.C. chapter and is $15 for all other attendees.