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Contact Us

Address

Mallers Building

5 South Wabash Avenue,

Suite 315

Chicago, IL 60603

USA

 

Phone:

(312) 920-1541

Monday - Thursday: 9:30-5:00  CST

Friday - Saturday: By Appointment Only

 

Call or email to schedule an appointment.

We are able to accommodate walk-in clients Monday through Thursday 

Professional Gem Sciences

Laboratory, Ltd.

​5 S. Wabash Avenue, Suite 315​

Chicago, IL 60603

   

© Copyright 2026  PGSL, Ltd.

Monday - Thursday

9:30am - 5:00 pm CST

Friday - Saturday:

By appointment only

T: (312) 920-1541



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