Phone #: (312) 920-1541
Toll Free #: (888) 292-1888
Fax #: (312) 920-1547
About Us Fees & Services Order Form News... Contact Us Home
Tom Tashey, CEO & President Welcome From Tom Tashey
Welcome to Professional Gem Sciences (PGS) web site. PGS is a full service gemological laboratory, offering independant, quality reports on diamonds and color gemstones, whether loose or mounted in jewelry, for both the trade and private individuals.

Our company was founded in Los Angeles in 1980, and Tom has over twenty-eight years of experience working in gemological laboratories. We take pride in offering dependable, fast, consistent, accurate reports which are used to determine the value of gemstones.

Our state-of-the-art lab is located in Chicago. 5 S. Wabash Avenue, Suite 1905, Chicago, IL, 60603.

Phone #: (312) 920-1541 Toll Free #: (888) 292-1888 Fax #: (312) 920-1547

I welcome your comments at: myriam@progem.com.

Tom Tashey
CEO &President
Our interactive web site, designed for the needs of the trade and consumer, will provide:

Interactive website features

These and many other features will be implemented to enhance a better understanding by all of the importance of gemstone grading.

At PGS we will continue to set standards -- one stone at a time -- and we sincerely look forward to working with and hearing from you.