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World Gemological Services, Inc.

Founded 2001 • With Angi since June 2010


(2) Verified Reviews


Gemological Institute of America (GIA) Graduate Gemologist and third generation jeweler Michael Cortez founded Gemological Services of Southern California in 2000 to offer consultations for fine jewelry establishments and individuals throughout California. Within a few years the company expanded to form World Gemological Services to provide services to the clients around the world. Accuracy, confidentiality, and excellent customer services continue to define our mission. We are a group of gemological professionals using leading edge equipment and up-to-date evaluation techniques and we are proud to be able to offer clients our expertise, experience, and ever-expanding knowledge base of modern diamond and gemstone identification and grading technologies and techniques. All of our appraisers are graduates of the Gemological Institute of America. The GIA is respected worldwide as the leading authority of diamond and gem stone identification and grading technology. The GIA is also generally thought of as the strictest grading authority in the world. All of our gemologists were trained by the GIA and, as a result, grade to strict GIA standards....

Verified Reviews

A few reviews for this pro…



We had just returned from overseas with purchases of south sea pearls and we wanted to verify the authenticity and value as soon as possible. Todd was able to accommodate us the same day and verify they were the real thing. He followed up with our written appraisals in a week. Great customer service!

5 appraisals for south sea pearl jewelry

CATEGORY jewelry appraisal



Great personal service! Plan to have more appraised.

Appraisal of jewelry

CATEGORY jewelry appraisal

Services Offered

World Gemological Services specializes in fine jewelry and gemstone appraisal. If you would like a professional evaluation of jewelry, watches, loose diamonds or colored gemstones simply call to set an appointment with one of our GIA (Gemological Institute of America) Graduate Gemologists. With over 50 years of combined experience our team of professionally trained gemologists provide a simple, pleasant and efficient way to help people meet the technical requirements for insurance an estate.

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