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GCAL provides independent and guaranteed
diamond grading certificates
increasing consumer confidence and sales opportunities.

GCAL Services

Diamond Certificates

The 5 Star Certificate
Integrated services including light performance and guaranteed grading
Ideal Cut Certificates
For round and princess ideal cut diamonds
Source Veritas™ Passport
The next generation in diamond certification

Advanced Technology

The GemFacts Mini-CD
Digital certificate delivered on a mini-CD
Gemprint™
Non-invasive diamond identification for enhanced security
Video Tour of Lab
Take a video tour of the GCAL lab.

Diamond Market Prices

Discover more about current diamond prices

News

GCAL's diamondprofile® Newsletter
(July/August 2008 Issue)

Welcome to the fourth edition of GCAL's Diamond Profile® Newsletter, covering a range of gemological topics, services, market information and new features on a timely basis.

GCAL Earns ISO 17025:2005 Accreditation

New York (April 24, 2008)– After a rigid auditing period, Gem Certification and Assurance Lab (GCAL) was awarded ISO 17025:2005 accreditation, meaning that it conforms to recognized international standards for accurate and reliable grading. Specifically, this recognition means that GCAL's lab is rated among the most technically competent in the world.

GCAL Launches Certified Diamond Exchange (CDE)

New York (October 28, 2007) - Gem Certification and Assurance Lab (GCAL) announces the launch of Certified Diamond Exchange (CDE), a free online diamond exchange where JBT-listed retailers, wholesalers and manufacturers can buy, sell and trade their inventory of GCAL certified diamonds.