Last updateTue, 22 May 2018 10pm

PGSL Diamond Classes bring professionalism to new generation of jewelers


(CHICAGO) - On Monday, November 19th, Professional Gem Sciences Laboratory (PGSL) successfully completed a two-week, intensive diamond training course. The course was held in the Mallers Building in downtown Chicago and was attended by twelve students representing the wholesale, retail, pawn and manufacturing sectors of the industry.

The PGSL diamond course, given bi-monthly, focused on developing sound techniques for grading and evaluating diamonds. In this aim, roughly half the of the two-hour class time was dedicated to lab sessions where hands-on instruction helped reinforce the discussion topics.

PGSL-JanAdditionally, students worked with laser drilled and fracture filled sample stones so that they will be able to identify the tell-tale signs of treatment and enhancement. After detecting these treatments, a thorough discussion of value proved informative for understanding how pricing in the industry works.

The course was also geared toward educating industry professionals to be proficient in trade customs. This included an in-depth review of ethical business practices that hinge on FTC and CIBJO guidelines.

PGSL will be offering the course again in January, and will be announcing dates for future classes to be held in Montreal, St. Louis, Columbus and Toronto. Advanced classes in KM Laser Drill detection, and recutting stones are also offered.

For enquiries and registration information for upcoming classes, contact Eitan Tashey at This email address is being protected from spambots. You need JavaScript enabled to view it..

Professional Gem Sciences Laboratory is a full-service gemological laboratory in Chicago run by Tom and Myriam Tashey. They are committed to education and the professional development of a new generation of diamond and jewelry experts. They have been in business for 33 years.

Professional Gem Sciences Laboratory, Ltd. is located at 5 S. Wabash Street, Suite 315, Chicago, IL 60603. Contact PGSL at 312-920-1541 or e-mail This email address is being protected from spambots. You need JavaScript enabled to view it..