Just like a human fingerprint, each diamond has a unique characteristic.

The GIL Dlasercode is the world's most sophisticated, non-invasive, active identification technology

The GIL certificate records the unique optical "fingerprint" of each diamond just like a human fingerprint, each diamond bearer has a unique characteristic, this patented technology was

invented in 1976, and its technology has been used by the FBI and the Canadian government.

Natural Diamonds Report

Colored Diamonds Report

Lab-grown Diamonds Report

GIL 6EX  Grading Report

The GIL Gem Identification Center, headquartered in New York City, New York, is the world's only non-invasive diamond identification system.

GIL's technology is now used by diamond cutters, gemstone laboratory, wholesalers, manufacturers, retailers and e-commerce websites worldwide. Today, GIL is a fully digital and computerized system that uses the latest laser technology and interactive fully automated scanning instruments to electronically capture and store this unique optical fingerprint.

Twelve Hearts Twelve Arrows

Find out the latest news from GIL's International Gemstone Lab here

GIL's core technology
GIL's core technology
GIL has devoted more than ten years of research, and finally developed an optical instrument Dlasercode that can study diamonds in a 360° all-round way. The diamond is placed inside the machine, an...
GIL in Hong Kong - For new markets, bringing new technologies.
GIL in Hong Kong - For new markets, bringing new technologies.
GIL has long been committed to understanding consumer concerns and developing more comprehensive analytical reports for consumers. On a single GIL certificate, jewelry buyers can often find all the...
GIL Registration: A wise choice for diamond loss prevention
GIL Registration: A wise choice for diamond loss prevention
Whether it is a precious engagement ring or a family stone, every diamond is unique, like a human fingerprint. To protect these valuable investments, GIL registration is one of the smartest protect...

Lab-grown Diamonds

You can learn almost everything about diamonds here

What is the fire of diamonds?
What is the fire of diamonds?
The fire color of a diamond refers to the colorful twinkle and glow produced by the gemstone under the exposure of light. This flicker is caused by the cutting process of diamonds and the propertie...
Diamond 4C-carat
Diamond 4C-carat
Carat is one of the key characteristic of a diamond's "4 C ", which describe the weight and size of a diamond. Here is some basic information about diamond carats:1. Carat definition: Carat is a me...
Diamond 4C-cut
Diamond 4C-cut
The Cut is one of the key characteristics of the "4C" of a diamond, which refers to the quality and craftsmanship of the cut. The cut has a profound effect on the appearance and properties of a dia...
Diamond 4C-clarity
Diamond 4C-clarity
The "4C" of a diamond refers to four key characteristics, one of which is Clarity. Clarity rating is used to describe the degree of imperfections, wraps and blemishes inside and outside a diamond. ...
Diamond 4C-color
Diamond 4C-color
The "4C" of a diamond refers to the four key characteristics of a diamond, one of which is "Color". Color rating is an important aspect of a diamond, and it is used to describe the color characteri...
Gem International Laboratories