HOW DOES GEMPRINT WORK?

A low-power laser beam is directed at the center of a diamond. The light enters the diamond and is broken into many rays as it reflects off the crown and pavilion facets. As the light reflects back out of the diamond, it passes through a lens and creates a distinct Gemprint® pattern.

This optical fingerprint is captured and saved in GCAL’s database, and a digital image of the Gemprint® pattern is printed on every GCAL Certificate.

These are examples of how the computer checks for a Gemprint match:

The green pattern is the Gemprint® of one diamond and the red pattern is the Gemprint® of another diamond. The computer rotates the pattern to find the best alignment and then marks the matching points. The sample on the left is only a 7% match and the one on the right is only a 3% match. Just like in fingerprint matching, positive identification requires a high percentage match.

This is an example of a matching Gemprint® pattern of the same diamond. The computer rotates the two patterns (red and green) to find the most accurate alignment, and then marks the matching points (image on right). This is a 99% match.

GEMPRINT® AS A LOCATOR IF LOST OR STOLEN

If your diamond is ever lost and recovered, official authorities can use Gemprint® to prove the identity of the diamond. The Gemprint® Registry is accessible from anywhere in the world.