Our Story

Precision Gem Grading Laboratory (PGGL Brazil) has opened in Brasilia on May 16, 2019 to serve the needs of the gem industry and consumers.

We use state of the art ImaGem technology in conjunction with expert gemologists to offer gem and diamond grading, identification and sorting services.

PGGL Brazil is the brainchild of successful Brazilian businessman Mr. Celio Correa and Indian-American scientist Dr. Lalit K. Aggarwal of Image Statistics Inc. USA.

A close-up of a gemologist examining a sparkling diamond under a microscope.
A close-up of a gemologist examining a sparkling diamond under a microscope.
An elegant laboratory filled with advanced imaging technology and gem grading equipment.
An elegant laboratory filled with advanced imaging technology and gem grading equipment.

Services

A close-up of a gemologist examining a diamond under a microscope.
A close-up of a gemologist examining a diamond under a microscope.
Gemstone Services

Precision Gem Grading Lab offers a variety of services for rough and polished gemstones.

We use advanced technology for grading of color, clarity, proportions and for creation of digital videos from ImaGem Inc., USA.

If you need a special service that is not listed here, please contact us and we will do our best to help you.

An array of colorful gemstones displayed on a velvet surface.
An array of colorful gemstones displayed on a velvet surface.
A modern laboratory setting with advanced imaging equipment.
A modern laboratory setting with advanced imaging equipment.
A team of gemologists collaborating on a grading project.
A team of gemologists collaborating on a grading project.
Diamond Services

Precision Gem Grading Lab offers a variety of services for rough and polished diamonds.

We use advanced technology for grading of color, clarity, proportions and for creation of digital videos from ImaGem Inc., USA.

If you need a special service that is not listed here, please contact us and we will do our best to help you.

View Projects

Our Location

Located in the heart of Brasilia, PGGL provides easy access for gem industry professionals and consumers seeking expert grading services.

Address

SCN – Quadra 02 – Bloco D
Asa Norte – Sala 1002 – Torre A
Edificio Liberty Mall
CEP: 70712-904 – Brasilia – DF
Phone: +55 (61) 3536.7368
+55 (61) 99379.1652

Hours

9 AM - 5 PM

Got a Question?

Copyright © 2025 Precision Gem Grading Laboratory, Brazil

Learn about gem identification, diamond grading certificates, light behavior, digital fingerprinting, ImaGem technology and how PGGL’s certification is different from traditional labs.