September’s birthstone is perhaps most known for the extraordinary sapphire ring worn by Kate Middleton, originally belonging to Princess Diana. Taking a cue from the British royals, celebrities like Penelope Cruz have fueled the colored gemstone engagement ring trend, with sapphire leading the way. (more…)
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…)
Many people know that diamonds typically come in a range of colors from D to Z on the GIA color-grading scale. However, most people don’t know how the naked eye sees color in a diamond. (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…)