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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

Famous Diamonds: Granny’s Chips

In addition to Cullinan I and the already featured famous diamond Cullinan II, the 3,106 carat (ct) Cullinan rough also produced stones III-IX, plus 96 smaller diamonds. Asscher, the diamond cutting firm, retained these diamonds as payment for cutting and polishing the Cullinan rough. The government of South Africa purchased most of them and gave the diamonds to Queen Mary in 1910. (more…)

Wondering How to Get the Best Diamond Price?

A diamond purchase is a significant one. Be confident you understand how to get the best diamond price.  Whether you’re shopping for an engagement ring or for a gift to yourself or a loved one, it’s natural to want to save money when possible, or at least know you’re getting a good value.  One frequently asked question is, can I get a better price by buying directly from someone in the supply chain who’s closer to the source? The short answer is: not really and here’s why:
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Famous Diamonds: The Portuguese

The Portuguese, a 127.01 carat Asscher cut diamond, was graded by GIA as VS1 clarity, M color, with Very Strong blue fluorescence. Photo: Chip Clark, Courtesy: Smithsonian Institution

Surprisingly, the 127.01 carat diamond called the Portuguese seems to have no connection to its namesake country. Legend claimed this diamond was found in the mid-1700s in Brazil and belonged to Portuguese royalty. However, there is no evidence to support this story. Instead, records indicate the diamond was found at the Premier Mine in Kimberley, South Africa, in 1910. (more…)

Jewelry Buyers Guide to Diamond Alternatives

Many jewelry shoppers, for reasons varying from cost to personal preference, consider “diamond alternatives” in place of a natural diamond. However, when asking a jewelry retailer about diamond alternatives, you are likely to receive a number of different answers. (more…)

Famous Diamonds: The Jubilee

At 243.35 carat (ct), the Jubilee is one of the finest examples of a diamond of exceptional size and quality (not to be confused with the Golden Jubilee, a 545.67 ct brown diamond). (more…)

Decoding Color: The GIA Colored Diamond Color Grading System

When does yellow become orange, and orange become red? The question may sound a bit philosophical until you tie it to colored diamonds, where slight variations in color can mean huge differences in price.

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Diamond Anatomy, Explained

When you’re shopping for a diamond, its brightness and sparkle will draw you to the jewelry counter, and keep you captivated long after you’ve made your diamond purchase. Achieving maximum brightness and sparkle requires excellent cutting technique, which is reflected in the diamond’s cut grade. Of the 4Cs, no other ‘C’ has more impact on a diamond’s appearance. (more…)

Famous Diamonds: Napoleon Diamond Necklace

The Napoleon Diamond Necklace, in the Smithsonian National Museum of Natural History, is set with 234 diamonds weighing approximately 263 carats; the largest stone is about 10.40 carats. Photo: Chip Clark, Courtesy: Smithsonian Institution

historic diamond necklace was a gift from Napoléon Bonaparte to his second wife, Marie-Louise of the Austrian House of Hapsburg, Empress of France. The necklace was given to commemorate the birth of their son, Napoléon François Joseph Charles (also known as Napoleon II), in 1811. Following her death in 1847, the necklace remained in the family for several generations. (more…)

Diamonds in the Rough

Once destined for industrial use, low-quality rough diamonds were thought to have too many impurities or inclusions to be used in high-end rings, bracelets, and necklaces.  But today, these diamonds are making their way into luxury jewelry. So why the sudden interest? (more…)

Famous Diamonds: The Orlov

Legend says was pried from the eye of an idol in India in the 1700s by a deserter from the French army. Photo: M. Nachinkin, Courtesy: RIA Novosti

The Orlov, a large rose-cut diamond, has been described as being shaped like half of a pigeon’s egg. It is the fourth in our Famous Diamonds series. (more…)

The Pink Star ring, which sold at a Sotheby’s auction for $71 million, contains a 59.60 ct Fancy Vivid pink diamond graded by GIA.
Crazy for Colored Diamonds

Jewelry connoisseurs have gone crazy for colored diamonds. And their appetites were practically insatiable in 2013.

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Zen style jewelry
Zen Style

Sleek. Simple. Sophisticated.

It’s Zen Style – jewelry that has clean lines and uncomplicated shapes. There’s little in the way of ornamentation and embellishment. Its beauty comes from artful construction and the pairing of contrasting shapes and colors. (more…)