THE GCAL ADVANTAGE

WHY GCAL? Glad you asked. Here are some of our Exclusives and Testimonials.
OUR PHILOSOPHY

We believe consumers should feel confident about their diamond purchase, that's why our mission is to provide the most accurate and consistent gemological services with uncompromising integrity and unparalleled customer care.

Learn More
OUR GUARANTEE

We believe experts should stand behind their work, that's why we issue Grading Certificates, not just grading reports. Our certificates come with a money-back guarantee so you can feel good knowing you got exactly what you paid for.

Learn More
OUR STANDARDS

We believe in doing things the right way, not the easy way, that's why we don't cut corners. With only one location in the USA, we have complete control of maintaining high standards, training and consistency.

Learn More
GEMPRINT

We believe having a traceable fingerprint of a diamond adds future protection to your investment, that's why we record the distinctive Gemprint of every diamond we certify. This light-emission DNA is positive identification.

Learn More
OPTICAL LIGHT PERFORMANCE

We believe that photographs are an integral part of forensics, that's why we take multiple photographs of every diamond. From cut performance photos to laser inscription photomicrographs, each image adds to the identification portfolio.

Learn More
ISO 17025 ACCREDITATION

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.

Learn More

WHAT THEY'RE SAYING

IN THE MEDIA
CNN International
CSI Las Vegas
Today
Pix 11
YOU'RE IN GOOD COMPANY GCAL CV