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

Diamond’s splendor has been appreciated for centuries, but there was not much scientific knowledge about it before the twentieth century. Since then, diamond knowledge has grown steadily, with …

While choosing a diamond is a very personal decision, evaluating a diamond should always be a matter of precision. At GIA, we are incredibly proud that our 4Cs of diamond quality continue to educate the …

Nov 24, 2015 · Diamond crystals are brought closer to the Earth’s surface through volcanic activity. Diamonds can be found in shallow alluvial deposits where the crystals settle after being transported …

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 …

Proper color evaluation is a matter of expertise. The correct way to evaluate diamond color is in precise conditions, under controlled lighting, where stones are compared to masterstones with established …

important limitations All Report Check information is subject to these limitations. Interested in getting your diamond graded by GIA? Submit Your Gem Now

GIA’s Diamond Origin tells the story of how diamonds mined from these countries support jobs, education, and health care and in many cases, how they help protect the environment in and around …

GIA pioneered the grading of diamonds, including the development of the 4Cs of Diamond Quality. The Institute offers diamond programs and courses for a range of experience levels that leverage its 80+ …

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, …