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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

Rose-cut sapphire and diamond cross pendant
The Cheapside Hoard – Buried Treasure

The story of the Cheapside Hoard has the twists and turns of the finest detective novels.

Between 1640 and 1666, nearly 500 items – including jewelry and loose gems – were placed in a wooden box and hidden in the cellar of a building near London’s St. Paul’s Cathedral. A large Colombian emerald pocket watch; a rose-cut sapphire and diamond cross pendant; an enameled gold ring set with a large table-cut diamond; a 2,000-year-old Egyptian agate cameo – these were just a few of the spectacular pieces secreted away.

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rose gold butterfly
Rose Gold Revival

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.

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van cleef zodiac pendant
A Quest for Beauty: The Art of Van Cleef & Arpels at the Bowers Museum

Want to see some exquisite jewelry? Then make for A Quest for Beauty: The Art of Van Cleef & Arpels at the Bowers Museum, Santa Ana, CA (October 27, 2013 through February 15, 2014).

The Bowers Museum has curated more than 200 iconic pieces made by the storied jewelry house. Jewelry is organized around four themes: Elegance, Exoticism, Femininity, and Nature. Expect to see remarkable craftsmanship, dazzling gemstones, and a parade of innovative and timeless works. (more…)

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Diamond in tweezers
Turquoise: December’s Birthstone, Loved for its Sky Blue Color

Those celebrating December birthdays are fortunate to have a few birthstones to choose from – zircon, tanzanite, blue topaz and lapis lazuli, among them. But one of the best known and most loved December gems is turquoise, a gem that has been mined and used for thousands of years. (more…)

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The Cheapside Hoard: London’s Buried Treasure

A treasure trove of jewels that lay hidden underground for nearly 300 years is now on display at the Museum of London.  Nearly a century after its discovery, the entire collection is being exhibited together for the first time. Workers demolishing a tenement house in the Cheapside district of London in 1912 discovered the priceless Elizabethan and Jacobean jewelry, loose gems and objects buried in a cellar. The treasure became known as “The Cheapside Hoard,” but the identity of its owner remains an enigma. (more…)

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platinum tri set
4Cs Tips for Holiday Shopping: 2013 Guide, Part 2

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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Diamond in tweezers
More is More: The Artistry of Tony Duquette & Hutton Wilkinson

Tony Duquette and Hutton Wilkinson are two jewelry designers acclaimed for their original work.

More is More: Tony Duquette – Hutton Wilkinson Jewelry, the duo’s first-ever all-jewelry exhibit, debuted on Oct. 10 at GIA’s world headquarters in Carlsbad, CA. The inventive body of work, which will be on display through March 2014, embraces a wide variety of styles, periods and palettes often showcasing unusual gemstones paired with rare materials in whimsical designs. (more…)

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Diamond in tweezers
Video: History of the 4Cs

The 4Cs – color, clarity, cut, and carat weight – describe a diamond’s appearance, define its quality, and greatly influence a diamond’s value. But did you know that before GIA established the 4Cs in the 1940s, there was no agreed-upon system by which diamond quality could be communicated? (more…)

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Diamond in tweezers
Tourmaline: October’s Colorful Birthstone

Tourmaline has one of the widest color ranges of any gemstone. While October’s birthstone can be found in virtually every hue of the rainbow, the most popular varieties range from rich reds and pinks, to greens and yellows, to blues and violets. Some tourmalines are bi-colored and parti-colored, exhibiting two or more colors in a single gem – a feature known as color zoning. (more…)

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Flaming Gorge Canyon & Brooch
Finding Inspiration in Unexpected Places

As artists, jewelry designers are inspired in different ways. Some create to echo iconic eras of the past, like Art Deco or Art Nouveau. Some provide their own perspective on famous works of art in galleries and museums. But some have a keen eye for taking a part of their ordinary, everyday life, and turning it into something exquisite. (more…)

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Diamond in tweezers
Mandela Day Library
GIA Partnership Brings Mandela Day Libraries to South African Schools

Adding to its educational efforts in Africa, GIA recently entered into a collaboration with the Nelson Mandela Centre of Memory to provide Mandela Day Libraries to four South African elementary schools. (more…)

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microscope
How GIA Educates

In addition to setting standards for determining gem quality and conducting front-line research, GIA protects the gem-buying public by educating gem and jewelry professionals. In fact, GIA was founded more than 80 years ago as an educational institution to help jewelers accurately and ethically communicate gem information to the public. (more…)

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