GIA’s 4Cs Q&A series wraps up with some bonus information on fluorescence, while passing along a few friendly words of advice. (more…)
GIA’s 4Cs Q&A series wraps up with some bonus information on fluorescence, while passing along a few friendly words of advice. (more…)
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…)
One frequent request GIA receives is, “Can you recommend a reputable jeweler?” The jewelry-buying landscape offers so many options: buying online, through retail chains, neighborhood jewelry stores, and even independent sellers. Establishing a relationship with a jeweler can seem daunting and confusing. GIA is here to help. While it can’t recommend specific jewelers or businesses, it does offer tools and tips to help you navigate your way through choices. (more…)
August’s fascinating birthstone may be called the “extreme gem” because it is formed in the most extreme conditions, found in lava, meteorites and deep within Earth’s mantle. Peridot has been found in pallasite meteorites, which contain remnants of our solar system’s birth. In 2006, peridot was found in comet dust brought back from the Stardust robotic space probe. (more…)
Understand all the aspects of the Diamond Clarity Scale and check out this diamond clarity grading chart in the second of GIA’s 4Cs Q&A series. (more…)
Platinum is a metal favored by jewelers for its durability, malleability and significant weight. It doesn’t tarnish and maintains its natural white color, making it an excellent option for heirloom jewelry. And because it’s long lasting, platinum creates a secure setting for diamonds and gemstones, making it a top choice for engagement and wedding rings to last a lifetime. (more…)
Do you know how diamond color is evaluated? GIA kicks off its 4Cs Q&A series with color grading. (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…)
With the current popularity of period pieces—fueled in part by films and shows like The Great Gatsby and Downton Abbey–there is a rising interest in vintage fashion and jewelry. The Edwardian period lasted from 1900 to 1915, when England was flush with power and wealth. For the landed gentry (land owners who could live entirely off of rental income), the Edwardian Era was a period of prosperity and privilege; however, class divisions were equally stark. (more…)
GIA graduate and Las Vegas Chapter GIA Alumni Association President Jeff Mason is the in-house gemologist at the World Famous Gold & Silver Pawnshop, the shop made famous by the hit reality show Pawn Stars. (more…)
Use of this site signifies your agreement to its terms of use.
© 2002 – 2025 Gemological Institute of America Inc. GIA is a nonprofit 501(c)(3) organization.
All rights reserved.