Get to know all you need about diamond – the history, facts, quality factors, treatments, imitations and much more here at GIA.

Diamond is the only gem made of a single element: It is typically about 99.95 percent carbon. The other 0.05 percent can include one or more trace elements, which are atoms that aren’t part of the diamond’s essential chemistry. Some trace elements can influence its color or crystal shape.

Diamonds have a long history as beautiful objects of desire. In the first century AD, the Roman naturalist Pliny stated: “Diamond is the most valuable, not only of precious stones, but of all things in this world.” A diamond has to go through a lot before it reaches the jeweler’s display case.

It isn’t until a diamond is cut, that the real beauty of a diamond begins to take shape. With a GIA Diamond Grading Report, you can confidently make your next diamond purchase. With an unbiased diamond evaluation, you’re free to focus on its beauty.

This framework is both a way to better understand your diamond, and to ensure accuracy in the evaluation of your diamond’s unique characteristics. It is the best way to ensure clear information, uniform practices, scientific grading and transparent evaluation in the global diamond industry.

Nov 24, 2015 · Even though the U.S. produces almost no diamonds for commercial consumption, America buys more than 40 percent of the world’s gem quality diamonds – making it the world’s largest diamond market. Now that you know some fun facts about diamonds and where they come from, take a look at some of the most famous diamonds ever found. The Hope ...

May 3, 2024 · Diamond is a much more compact form of carbon, with a density of 3.52 g/cm 3, 56% higher than the density of graphite. Great confining pressure is required to stabilize the denser configuration of carbon atoms and crystallize …

Our expertise is reflected in a variety of diamond reports, ranging from the GIA Diamond Dossier to the GIA Diamond Origin Report. Learn what each report can tell you about your diamond and insist on one when you are ready to make your purchase.

Understanding the weight of your diamond purchase. When shopping for a diamond, you may hear a jeweler refer to a diamond’s weight in points, calling a diamond that weighs 0.25 carats a “twenty-five pointer.”

Mar 14, 2013 · The prospect of purchasing a diamond may seem daunting, but through GIA, an unbiased authority on diamonds, you have several handy resources to help you select the highest quality diamond. First up, an overview of the 4Cs: Color, Clarity, Cut, and Carat Weight.