THE GCAL ADVANTAGE

We believe challenging ourselves leads to better performance, that's why our methods and procedures are independently audited annually, ensuring we uphold the standards of the ISO 17025 Forensic Laboratory Accreditation.

Every year, GCAL's methods and procedures are independently audited to ensure we uphold the standards of the ISO 17025 Laboratory Accreditation.

Who tests the testers?
ISO 17025 Laboratory Accreditation is like a Good Housekeeping Seal of approval for laboratories involved in testing or measuring materials. It means GCAL is doing everything consistently and accurately. GCAL is the only gem lab in the World to earn this prestigious accreditation

It is added assurance for the consumer that GCAL is doing everything consistently and accurately. GCAL is one of only two diamond grading labs in North America to earn this prestigious certification and it is one of only four diamond grading labs in the world that is ISO 17025:2005 accredited. In 2014, GCAL became the only gem lab in the world to earn the ISO 17025 Forensic Accreditation. Every year, GCAL's methods and procedures are independently audited to ensure we uphold the standards of the ISO 17025 Laboratory Accreditation.

What is ISO?
The International Organization for Standardization, (ISO) is the world's largest developer of International Standards. ISO defines standards for a huge range of technologies, industries and business sectors. Recognized standards have a profound influence on things that deserve to be taken seriously - such as the safety, reliability and efficiency of machinery, pharmaceuticals, transport, toys, medical devices, and gemstones.

The ISO seal of approval means that GCAL conforms to international standards for accurate and reliable grading. This accreditation stands for reassurance and minimal risk. It enhances consumer confidence.

Click below to view our Certificate and Scope of Accreditation

View Certificate/Scope