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At a recent auction of recycled polished diamonds in Hong Kong, White Pine offered more than 200 lots of mainly smaller diamonds, ranging from 20 carats total weight to nearly 1,200 carats. This lot contains 1,160.68 carats of approximately 0.01 ct. stones of mixed qualities. Photo by Russell Shor/GIA
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Recycled Diamonds: ‘Mining’ the World’s Largest Diamond Resource

A New York company has become one of the world’s largest purveyors of pre-owned diamonds by buying jewellery from owners eager to convert to cash.

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Diamond History and Lore

The world’s love of diamonds began in India, where diamonds were gathered from the country’s rivers and streams. Some historians estimate that India was trading in diamonds as early as the fourth century BC.

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The round brilliant is the most popular diamond cut. Because of its popularity, assessment of this cut has been the subject of considerable research. Courtesy of Harold & Erica Van Pelt.
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Diamond Cut: The Wow Factor

Learn the basics of the GIA Cut Grading System for round brilliant cut diamonds to help pick out your perfect diamond.

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Diamond Buying Tips

You can buy a diamond with confidence when you follow these tips.

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Famous Diamonds Examined by GIA

An aura of mystery has always surrounded these natural wonders, so it was quite an honour when GIA researchers examined these famous diamonds.

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Secrets to Keeping Your Diamond Sparkling

These tips will help you make sure your diamond shines its best for any occasion.

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Grading the Hope Diamond

One of the most popular exhibits at the Smithsonian Institution, the stunning Fancy Dark greyish blue Hope diamond was formally graded by GIA’s gem laboratory.

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The Legendary Dresden Green Diamond

In addition to its rich history, the Dresden Green offers an opportunity to gain information about how to distinguish natural from laboratory-irradiated green diamonds.

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Couple Engagement Ring Shopping
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How to Purchase the Perfect Diamond Engagement Ring

Follow these tips to pick out the perfect engagement ring for the love of your life.

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Fancy-coloured Diamond
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Fancy Colour Diamond History and Lore

While fancy colour diamonds have traditionally been a small part of the diamond business, their popularity and availability have grown in the past few decades.

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