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    • The World Of Color

      Price$495.00

    • Table Gauge

      Price$25.00

    • CZ Color Grading Master Set

      Out of stock

    • The World of Diamonds

      Price$75.00

    Professional Gem Sciences

    Laboratory, Ltd.

    ​5 S. Wabash Avenue, Suite 315​

    Chicago, IL 60603

       

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    T: (312) 920-1541

    

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