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GIA 4Cs Diamond Blog

GIA 4Cs Diamond Blog

Lab-Grown Diamond Jewelry: What are Synthetic Diamonds?

Synthetic diamonds are grown in laboratories and have essentially the same chemical composition, crystal structure and physical properties as natural diamonds. They’re real diamonds and not ‘fakes,’ but they are not the same as natural diamonds.
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Studying Synthetic Diamonds

Synthetic diamonds grown in a lab are virtually identical to natural diamonds, but that’s where the similarities end. In fact, there are two distinctive methods used to grow synthetic diamonds(more…)

What Are Synthetic Diamonds?

Synthetic diamonds are grown in a laboratory and have essentially the same chemical composition and crystal structure as natural diamonds formed millions of years ago. In the last 30 years, gem quality synthetic diamonds have been grown in Japan, South Africa, Russia, Ukraine and the United States. Synthetic diamonds are generally produced using either High Pressure/High Temperature (HPHT) or Chemical Vapor Deposition (CVD). (more…)

Propose Now, Shop Later: The Placeholder Ring

Ready to propose but not ready to buy an engagement ring? A placeholder ring is a great stand-in while you work out the thousand-and-one details that go into buying your forever engagement ring. Here’s what to consider: (more…)

Jewelry Buyers Guide to Diamond Alternatives

Many jewelry shoppers, for reasons varying from cost to personal preference, consider “diamond alternatives” in place of a natural diamond. However, when asking a jewelry retailer about diamond alternatives, you are likely to receive a number of different answers. (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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Black Diamond Buying Guide: What You Need to Know
Black diamonds embody mystery, strength and sophistication. Learn about their 4Cs and rich history in our Black Diamond Buying Guide.
Diamond Alternatives for Engagement Rings
Explore the most popular diamond alternatives, their suitability for everyday wear, and why they’re becoming increasingly popular for modern engagement rings.
Rubies vs. Diamonds: What are the Similarities and Differences?
Rubies and diamonds are among the world’s most treasured gemstones. Learn about which similarities and differences you should know before a purchase.
Emerald vs. Diamond: What are the Similarities and Differences?
When choosing between an emerald or a diamond, it's important to understand their unique attributes, pricing considerations and suitability for everyday wear.
Types of GIA Reports
With nearly 100 years of research, education and experience, GIA is the authority on diamond, gemstone and pearl reports. When it comes to defining diamond quality, there is no substitute for a GIA grading report.
Cruise Ship Shopping: Tips for Buying Gems and Jewelry

A cruise ship vacation offers a sea of buying options for diamond or colored gemstone jewelry. To get the best value for your memento, it pays to do some homework and know the risks of buying jewelry while on a cruise. (more…)