THE PLUMB CLUB ELECTS NEW BOARD

Gemological Science International (GSI), headquartered in New York, operates 13 laboratories strategically located in major global hubs for diamond and gemstone manufacturing and trade, including the United States, India, Hong Kong, Dubai, and Thailand.

All GSI laboratories grade using the same methods and adhere to the same standards. Every laboratory is staffed with highly trained professionals who have years of grading experience and an extensive gemological background.

The phrases “GSI Certificate” and “GSI Certified” are industry shorthand for GSI grading or identification reports. What this means to you is that expert gemologists and trained professionals meticulously evaluated the item. When your diamond, jewelry or gemstone is accompanied by a GSI grading report, you can be completely confident in the accuracy and objectivity of the evaluation.

GSI diamond grading and identification reports can be found in jewelry stores worldwide and online. Insist on a GSI grading report when shopping for a diamond, jewelry or gemstone.

Every GSI grading report is available on our website. Please visit gemscience.net and go to “verify your report”. Enter your GSI report number and you’ll instantly have access to a digital copy of it. You can also email us through the website to request a copy.

A beautiful diamond is one of nature’s most mesmerizing creations. But how do you objectively judge the quality of the gem? The 4Cs – Cut, Color, Clarity, and Carat Weight – are the universal standard for doing this.

The 4Cs are an essential and important description of a diamond’s characteristics. But there is a considerable amount of detailed information behind each “C” along with other qualities of a diamond that affect its beauty, such as fluorescence, light performance and more.

How much do you need to know? That’s up to you, but knowing the 4Cs is almost essential.

GSI offers a number of grading reports (often referred to as “GSI Certificates”). You can see samples of them by browsing the Grading Reports page on our website.

You can see samples grading reports by browsing the Grading Reports page on our website.

You can see samples of Colored stones reports by browsing Grading Reports page on our website.

It is our policy not to comment on other laboratories. However, know that GSI adheres to the highest ethical standards. We do this in a number of ways:

• Rotating gemologists to our different labs
• Continuously upgrading our proprietary grading software to ensure full compliance with international grading standards
• Having our gemological research department constantly investigate new developments in the industry, which informs the grading process

GSI issues a variety of grading and identification reports. Consumers and industry professionals often call these reports “GSI Certificates”.