Thomas Cooper Jewelry: Where every piece makes you smile!

The Diamond 4Cs

Imagine yourself shopping for a diamond, it can feel intimidating. The fact is, there is a lot of scientific data that you need to know when choosing a natural diamond. Don’t worry, the world-renowned Gemological Institute of America (GIA) has got your back! The GIA invented the Diamond 4Cs so let’s go straight to the source for the knowledge that you need to know before choosing your diamond.

"When you’re searching for a diamond, you’re going to be bombarded with a lot of technical information that you need to know. Do yourself a favor and watch the Diamond 4Cs videos and try the interactive tools provided by the world-renowned Gemological Institute of America. " -- Thomas Cooper

Scroll or click the links below to learn everything you need to know about the Diamond 4Cs

History of the Diamond 4Cs


1. Color



2. Clarity


3. Cut


4. Carat Weight



How to Read a GIA Grading Report


How to Choose a Diamond




Diamond 4Cs Interactive Tools




Diamond Color Grading Tool


Diamond Clarity Grading Tool



Diamond Cut Grading Tool


Diamond Carat Weight Comparison Tool