Natural Diamonds | Diamond Stone – GIA C
Get to know all you need about diamond – the history, facts, quality factors, treatments, imitations and much more here at GIA.
Gemological Institute Of America | All About Gemstones - GIA
Laboratory-Grown Diamonds: An Update on Identification and Products Evaluated at GIA. Reviews the advancements and major trends in laboratory-grown diamonds observed by GIA since 2007. Read More.
What Is a GIA Diamond - GIA 4Cs
2018年2月15日 · GIA diamond is a term you’ll find when engagement ring shopping – short for a diamond graded by GIA, the creator of the 4Cs and the independent, diamond authority. Learn more about GIA diamonds and why savvy shoppers rely on GIA.
GIA Diamond Grading | GIA 4Cs
The GIA Diamond Grading Report. This report uses the universally accepted GIA standards to determine a natural diamond’s shape, color, clarity, cut and carat weight – as well as proportions, finish and treatments. It also includes a plotted diagram which maps your diamond, identifying its unique characteristics. The GIA Diamond Origin Report.
GIA Diamond Grading Scales: The Universal Measure of Quality
2013年3月14日 · GIA created the 4Cs (Color, Clarity, Cut and Carat Weight) as a universal method for establishing the quality of any diamond, anywhere in the world. The 4Cs means two very important things: diamond quality can be communicated in a universal language, and diamond-buying consumers can know exactly what they are about to purchase.
Gemological Institute Of America | We Grade The World's Most …
Diamond Knowledge at Your Fingertips. Learn how the 4Cs affect appearance and value via videos, articles and interactive tools. Save and organize diamond reports, or create a diamond wish list-all with the new GIA App.
Analysis & Grading - GIA.edu
GIA is the world’s most trusted name in diamond grading and gem identification. With objectivity and expertise as its hallmarks, GIA ensures the integrity and accuracy of every report it issues. GIA tests every material submitted to determine whether it is natural or not, and discloses any treatments discovered during our examination.
Home | GIA 4Cs
For nearly 100 years, GIA has helped advance the global diamond industry through innovation and education. A GIA Diamond Grading Report is more than the standard in diamond evaluation—it is the internationally trusted source for diamond quality reporting by jewelers, museums and auction houses.
Most Precious Diamonds, - Gemological Institute of America
From the Hope diamond to the Spirit of the Rose, the Taylor Burton and the Lesotho Promise, we are trusted by museums and top auction houses all over the world to grade and research nature’s finest treasures.
GIA Diamond Origin - Gemological Institute of America
GIA’s Diamond Origin tells the story of how diamonds support jobs, education, and healthcare and protect the environment in and around local mining communities. When you buy a diamond with a GIA Diamond Origin Report, you contribute to the livelihood of mining communities.
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