Home Diamonds

Buying Diamonds with Confidence

Buying with Confidence

If you know absolutely nothing about how to buy a diamond, you're in good company. Most people know little about the characteristics of diamonds or how to make an educated purchase.

Of course, that’s why we’re here. Our job is first and foremost to inform you, the buyer, when you shop for jewelry. We are passionate about connecting shoppers with educated and ethical jewelers so they have peace of mind while shopping for that important purchase.

We have precise standards for evaluating diamond quality, commonly known as the 4Cs: Cut, Color, Clarity and Carat Weight. These standards make it easy to compare different diamonds and understand their value.

Diamond Grading

To make buying diamonds even easier, the American Gem Society Diamond Grading Standards was created to evaluate three of the four value factors – Cut, Color and Clarity – on its own 0-10 scale.

The scales begin at 0 (zero), the highest grade, and go down to 10, the lowest. When you take these three factors and combine it with the carat weight, you get the final AGS Grade.

When buying diamonds, don’t just rely on the sparkle in the store. Ask to see the American Gem Society Laboratories’ grading report so you can judge all the inherent factors that give the diamond its value.

Find an AGS Jeweler or learn more about the AGS diamond grading system.

Signup for our Newsletter

The Latest News

Ruth Batson, CEO of the American Gem Society and AGS Laboratories, to Retire in June, 2017
Las Vegas, NV (February 8, 2016) – The American Gem Society (AGS) and AGS Laboratories announced today that Ruth Batson, CEO of both organizations, will retire....
Latest Facebook Post:
Visit our Perfect Proposal Toolkit and get educated on "Diamond 101", and don't forget to enter our contest for a chance to win a $1,500 gift card to an AGS jeweler of...