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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

Turquoise Buying Guide

Found only in a few places on earth, turquoise is the second of December’s two official birthstones. Sought after for its robin’s egg blue and unique spiderweb-like patterns, it’s a perfect gem for unusual jewelry designs. (more…)

Tanzanite Buying Guide

Notable for its majestic blue velvet and intense royal purples, the first of December’s birthstones is named after the only country it can be found: Tanzania. Exceptional tanzanite can display three distinct colors in three crystal directions. (more…)

GIA Celebrates Birthstones – Tanzanite, Tanzania’s Treasure

Tanzanite, December’s birthstone, is found in the shadows of the majestic Mount Kilimanjaro in Tanzania, the only commercial source for the gemstone. (more…)

GIA Celebrates Birthstones – Forget Me Not With Turquoise

Turquoise, the December birthstone, has a distinct blue or greenish-blue color because it contains copper, and is most commonly found in China and the U.S. southwestern states Arizona, New Mexico, Colorado and Nevada. (more…)

The Beauty of Birthstones Connects Us All

Everyone has a birthstone. Do you know what yours is?

GIA is showcasing birthstones in a big way at the Carlsbad campus with a special exhibit running through spring 2013. The GIA Museum team strives to provide incredible shows that will appeal to everyone. It is fascinating to not only learn about your own birthstone, but your friends’ and family members’ too! (more…)

All About Birthstones: Tanzanite in December

Tanzanite, the December alternate to turquoise and zircon, was not discovered until 1967, so it is a relative newcomer to the list of birthstones. It is named for the one country on earth where it is currently found: Tanzania, in eastern Africa.  Although discovered by others, Tiffany & Co. deserves the credit for naming the gem and popularizing it beginning with a big publicity campaign in 1968. (more…)

GIA Celebrates Birthstones

If you want to learn more about your birthstone or enjoy browsing some spectacular gems, be sure to make your way to the “GIA Celebrates Birthstone” exhibit at GIA Headquarters in Carlsbad, California. Whether browsing a variety of polished gems, or taking in some of the spectacular jewelry on display, you won’t want to miss this rare opportunity. (more…)