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

Fancy Color Diamond Dazzling brilliance. Captivating color. These are the planet’s most valued gems.

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 …

The clarity of a diamond is based on the size, location, visibility and number of inclusions or blemishes. Internal and surface reaching characteristics are called inclusions. External …

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 …

Aug 13, 2015 · Toggle through the examples, and mouse over the diamonds to see how blemishes and inclusions can impact a diamond’s appearance at each grade level on the …

May 31, 2019 · This desktop-sized instrument combines advanced spectroscopic technology with GIA’s 60 years of diamond and gemstone identification research to distinguish natural …

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 …

Diamond Grading Limited-Time Offer: Spend $100 or more on Point of Sale Tools and get 3 Free Gifts Gifts include the Cardboard Gemstone Display, Birthstone Flipchart, and Double-Sided …