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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

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…)

Fancy-Color Diamonds

When it’s time to buy a diamond, many people spend a lot of time educating themselves on the 4Cs of diamond quality, and then determining what the personal trade-offs between those various quality characteristics will be. (more…)

Why Start with “D”?

When men and women really start looking into diamond grading, a common question is, “Why does the GIA color grade start with a D?” (more…)

Before You Visit a Jeweler, Ace the 4Cs

All diamonds are rare and no two diamonds are alike. A diamond’s quality and rarity is determined by its unique combination of characteristics of Color, Cut, Clarity and Carat Weight.  The International Diamond Grading System™, used around the world since its invention by GIA in the 1950s, is based on the Four Cs. (more…)