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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

fancy colored diamonds

Going once. Going twice. Going three times. Sold for $83.2 million.

That was the winning bid for the 59.6 carat Fancy Vivid Pink Dream in November 2013 – the most ever paid for a diamond. The amount was comparable to prices paid for paintings by some of the masters.

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The Culllinan II, a 317.4-carat rectangular cushion cut, is set into the Imperial State Crown. - Courtesy Time & LIFE Pictures/Getty Images

The Cullinan II is a 317.40 carat (ct) cushion cut diamond and the centerpiece of the British Imperial State Crown. Do you know the history behind this beautiful diamond? (more…)

heart-shaped ruby ring

What better way to celebrate the love for your significant other than by giving heart shaped jewelry and diamonds this Valentine’s Day? As the world’s foremost expert in gems and jewelry, GIA offers a few tips and best practices before you set foot in your neighborhood jewelry store. (more…)

Elizabeth Taylor diamond

What makes a diamond famous? It might be the diamond itself, the story behind it or the people who’ve owned it. Today we kick off part one of our Famous Diamonds series, which will reveal the stories and secrets behind some of the world’s most extraordinary diamonds. First in the series is the 33.19 carat Elizabeth Taylor Diamond. (more…)

garnet birthstone

January’s birthstone, garnet, is known for its impressive variety of eye-catching colors, which can be almost any color of the rainbow. Garnets occur in green (demantoid and tsavorite), orange (spessartine), red (almandine and pyrope), and purplish red (rhodolite), plus a few rare garnets even change color under different types of light. But color is far from a garnet’s only attractive feature. (more…)

rose gold butterfly

The ever-changing nature of jewelry trends is driven by a number of factors. Right now, rose gold is having its moment in the sun after precious white metals were the color of choice for the past few years. Let’s take a look at why that might be. (more…)

diamond

In the 2013 GIA Holiday Buying Guide, we’ve talked about diamond jewelry styles and trends, and how to buy diamond jewelry, but as we near the end of the holiday, there is still one significant topic to address: how to buy her something she’ll love.

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platinum tri set

Diamond jewelry is often at the top of a woman’s holiday wish list but getting her a gift that she’ll love doesn’t have to be complicated. In the second installment of our 2013 Holiday Buying Guide series, you will learn the basics of what to look for when shopping for diamond jewelry.

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Black never goes out of fashion, and this season it’s taking a prominent place in fashion trends, especially in jewelry.

Black diamonds. Black pearls. Black spinel. The love of black-color gems and jewelry ranges from the most affordable to the most luxurious, and for good reason. It’s incredibly versatile. It’s the color of sophistication and elegance. It’s both edgy and timeless. (more…)

As the creator of the 4Cs and International Diamond Grading System, GIA also established color grading standards and terminology specifically for colored diamonds, based on the color’s hue, tone, and saturation. Today, we identify some of the defining characteristics that help make fancy-color diamonds a true feast for the eyes. (more…)

GIA diamond 4Cs Spokes

Consumers have more options than ever when it comes to buying diamonds. In addition to jewelry retailers, you can shop conveniently from your computer, tablet, or smartphone. Many of the same considerations apply whether you’re buying a diamond in person or online, but GIA has a few additional tips for shopping online that will help you click the “Buy Now” button with confidence. (more…)

The world eagerly awaits news of the arrival of the newest British Royal, due to be born any day. The royal couple’s child will officially be known as His or Her Royal Highness Prince or Princess of Cambridge, a title fitting for a child that will likely inherit the throne, and along with it, the right to wear the British Crown Jewels. GIA has highlighted a few of the spectacular jewels, which are mostly kept secured at the Tower of London.  (more…)