Professional Gem Sciences Laboratory

03/25/2026

🔹swipe to see a cubic inclusion🔹 Today in the Lab: This 3-stone ring has a brilliant green Colombian natural emerald beryl with two natural diamond side stones - one which features a cube-shaped inclusion, a rare and opaque cuboid naturally formed through fibrous growth in the stone.

02/15/2026

This Tuesday, Jennifer Heebner, fresh from her Tucson travels, had the privilege of updating the Chicago jewelry community on the latest trends and insights. The Jewelers Center Professional Gem Sciences Laboratory Myriam Tashey

PGS had the pleasure of welcoming jewelry journalist Jennifer Heebner to Chicago this past week, following her trip to the Tucson Gem Show. Jewelers and enthusiasts alike gathered for her talk at the Maller's Building to learn about upcoming trends for 2026. Heebner has been covering the jewelry ind...

02/14/2026

Today in the Lab: variations of diamond fluorescence in this vintage brooch

02/11/2026

Today at noon - The Jeweler’s Center Presents Jennifer Heebner, an insightful jewelry event you can’t miss!
Where: 5 S Wabash Ave
When: Wednesday, Feb 11 - 12pm-1pm
What: Come hear from jewelry industry thought leader, Jennifer Heebner, fresh off AGTA GemFair Tucson, for an exclusive event showcasing trends in jewelry, gems and social media. Jennifer is an award-winning journalist with 28 years of experience in the fine jewelry industry. She is the editor in chief for the American Gem Trade Association’s Prism magazine and ePrism weekly newsletter and the past editor in chief of The Jewelry Book and of , which she created for the Pearl Association of America (PAA), where she spent seven years as its executive director. She contributes to Rapaport, The Plumb Club, INSTORE, and The GemGuide, is a PAA-certified pearl specialist, and past president of the Metropolitan chapter of the Women’s Jewelry Association.

01/15/2026

https://www.linkedin.com/posts/gia_for-nearly-four-decades-the-argyle-diamond-ugcPost-7416403615742877698-nSNG?utm_medium=ios_app&rcm=ACoAAAGAPXkBALjlwNWBT7l1E27I_xPD_RHV-bs&utm_source=social_share_send&utm_campaign=facebook

01/10/2026

Check out our latest video on YouTube!
A short promo showcasing our diamond & gemstone identification & grading classes.
Perfect for beginners and professionals alike — enroll online today.

08/31/2025

07/05/2025

Magnificence - artistry in motion

10/06/2024

Our recent diamond and gemstone courses - a special thank you to Ari of Levi Diamonds explaining and demonstrating the who, what and how of diamond cutting. He was very generous with the Q&A sharing his knowledge about diamond cutting.

03/29/2023

PGS Lab Spring 2023 Course Announcement - https://mailchi.mp/050eeb82e947/pgs-lab-spring-course-announcement - Diamond and Gemstone Grading & Identification: Hands-on Immersions this April

10/16/2022

Tiffany and Co. no heat Kashmir Sapphire and Diamond brooch

10/14/2022

I love ❤️ brooches