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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

Changing a Diamond’s Color

If you’re thinking of buying a colored diamond, you’ll want to know if its color is natural or is the result of a treatment process. (more…)

coated collections of colored diamonds
Diamond Treatments and What They Mean to You

As a diamond consumer, you’ve probably heard the term “diamond treatment” or “treated diamond,” or perhaps “enhanced diamond” and wondered what that meant. A relatively small percentage of gem-quality diamonds are treated and they are treated for two reasons: to improve clarity or to alter color.

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Silver: A metal that shows its mettle

Affordable, prestigious, and trendy, it’s no wonder that silver is enjoying a renaissance. Considered one of the three Noble Metals – gold and platinum being the other two previously covered – silver sales have been on the rise, with an average increase of 19% from 2011 to 2012 (according to the National Jeweler/Nielsen silver survey). (more…)

GIA diamond 4Cs Spokes
Tips for Online Diamond Buying

Consumers have more options than ever when it comes to buying diamonds. In addition to jewelry retailers, you can shop conveniently from your computer, tablet, or smartphone. Many of the same considerations apply whether you’re buying a diamond in person or online, but GIA has a few additional tips for shopping online that will help you click the “Buy Now” button with confidence. (more…)

How Color Happens in Diamonds

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…)

Cartier pavé round and channel set diamond earrings set in platinum. (c) GIA & Tino Hammid
Platinum: A Metal Fit for Kings

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…)

Comparison of a dirty and clean diamond
How to Clean Your Diamond Jewelry

Diamonds are among the hardest natural minerals on Earth, yet they require special care to keep them shining and looking their absolute best. In fact, a diamond’s sparkle can be lost by the mere touch of a finger, which can cause dirt to collect on the diamond. (more…)

High Pressure/High Temperature Diamonds and GIA

As you’ve searched for the perfect diamond, you may have learned about high pressure/high temperature diamonds, or HPHT.  These are diamonds that have been treated via temperature or pressure to look better than they were naturally. Jewelers are required to provide full disclosure on HPHT stones to their customers. (more…)