GWLAB™ is an independent gemological chain of laboratories, founded by Gemewizard® - a pioneer in the development of software solutions for colored stones, fancy colored diamonds and jewelry industries, enabling the analysis, description and communication of color in gems.

GWLAB world locations
GWLAB World locations: laboratories (red) and take-in service offices (green)

Each GWLAB branch is a gemological complex composed of four sections: GWLAB gemological laboratory; jewelry and precious stones appraisals department; GW College, also known as Gem Color Academy, for gemological and gem-trade education and courses; and GWLAB Research and development center, led by Gemewizard experts.
GWLAB provides a variety of services, including: diamond grading, colored diamond grading, laboratory-grown diamond grading and gem identification and jewelry reports; professional consultation to jewelers, goldsmiths, insurance appraisers, tax authorities and the public; appraisal services for jewelry and precious stones; laser inscriptions services on diamonds and colored stones; and educational lectures and seminars about a wide range of gemological and gem trade-related topics.

Testing jewelry at GWLAB laboratory

The GWLAB team prides itself on its highly skilled members, all of whom are highly professional gemologists, who had graduated from the world-renowned gemological institutes, GIA and Gem-A, and specialize in the analysis and grading of color, clarity and cut in gems, using state-of-the-art analytical equipment. The team is directed by Menahem Sevdermish, FGA, a world-leading gemologist and gem expert.

To learn more about Gemewizard and its technology solutions, please click here.