Learn the 4Cs of Diamonds | James Allens Education Center

  • + - Are any of your diamonds laser treated or modified in any way?
    JamesAllen only sells diamonds that are 100% natural and untreated. The Gemological Institute of America (GIA), the American Gem Society Laboratory (AGSL), and the International Gemological Institute (IGI) will not issue grading reports on diamonds that have been treated or enhanced, so purchasing our diamonds - which are GIA, AGS or IGI certified - is another guarantee that your diamond is natural.
  • + - What are conflict-free diamonds?
    Conflict-free diamonds are gems that were not obtained due to human rights abuses, child labor, violence, or environmental degradation. At James Allen, we make sure that our customers receive conflict-free diamonds. Our internal guidelines exceed government requirements. When you shop at James Allen, you can be certain that your diamonds are coming from the most reputable providers.
  • + - What are the Four C's?
    The Four C's - Carat (size), Color, Clarity and Cut - are the industry grade standard from the Gemological Institute of America (GIA). Every diamond is specifically graded on these features.
  • + - What are GIA, AGS and IGI diamond certificates?
    A GIA, AGS and IGI diamond certificate assures the value and quality of your diamond. GIA, AGS and IGI are the gold standard in diamond grading. Their reports detail key characteristics of each diamond.
  • + - What does the term "eye clean" mean?
    "Eye-Clean" is a term used to describe a diamond that is clean to an unaided eye in a face-up position from a distance of 8 to 10 inches. Diamonds of VS2 or higher in quality will always be eye-clean. Diamonds of Si1, Si2 and I1 need to be visually inspected to determine whether any inclusions are visible from the top. We can inspect any diamond at no charge.
  • + - What is "Cut"?
    A diamond's cut determines how effectively it returns light to the viewer's eye: a well-cut diamond appears brilliant and fiery, while poorly cut stones look dark and lifeless. Well-cut diamonds often appear larger than stones of the same carat weight.
  • + - What kind of diamonds do you use for accent stones?
    Smaller diamonds (often called melee) are cut in factories around the world and are available in a variety of qualities. The lowest quality goods are usually labeled as "commercial" and consist of I/J/K color and I1 clarity. "Promotional" goods are higher in both color and clarity, but are still cut for maximum weight. The highest quality diamonds are often referred to as "Collection". Collection diamonds are finer in both color and clarity. They're precisely cut to maximize fire and brilliance. Collection quality goods are only available from specialty dealers. We pride ourselves on using collection diamond melee in all of our engagement designs.
  • + - Are any of the gemstones used in your jewelry heat-treated?
    Yes. It is very common for natural gemstones to be heated. Heating the stone can intensify color and clarity, making the gemstone more beautiful and valuable. In addition, emeralds are commonly infused with a colorless oil, wax or resin to improve their appearance and luster. Nearly all rubies and emeralds on the jewelry market today are heated or treated in some fashion.
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Education Center

Loose Diamonds

It's important and advisable to learn about diamonds before you purchase one. Diamonds are complex, with many attributes that affect their overall beauty and quality. At James Allen’s Education Center, you go beyond the “Four C’s” (Cut, Color, Clarity, and Carat Weight) and learn about everything that gives a diamond both its beauty and its value.

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Fancy Color Diamonds

Fancy color diamonds are extremely rare stones. Approximately one out of every 10,000 naturally produced diamonds are considered “fancy colored.” The term “fancy” was coined by the Gemological Institute of America to distinguish between natural-color polished diamonds which display color and white diamonds.

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Natural gemstones, like diamonds, have different grades of quality, and it is important to educate yourself about the qualities that are assessed to determine the overall value of your chosen stone.

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Engagement Rings

When designing the engagement ring of your dreams, there is so much to consider. Presented with almost limitless combinations of settings and diamonds, it is easy to get flustered. By doing the proper research and asking the right questions, you will be able to design the perfect diamond engagement ring with little effort.

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Wedding Rings

These symbols of lifelong commitment not only reflect the two of you as a couple, but each of you individually as well. While a wedding ring should, in some way, be similar to the engagement ring it sits next to, it need not also be similar to the man's wedding band. Once you have chosen an engagement ring, finding the right wedding ring is easy.

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Fine Jewelry

Fine Jewelry is a welcome addition to any woman's collection. Pearls, gemstones, diamond studs and pendants compliment any occasion and add a touch of class. Although personal taste and style dictates what type of fine jewelry fits what type of situation, there are certain things you should consider.

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What is Your Ring Size?

Find your ring size online in just a few steps or request a ring sizer.

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Ring Manufacturing

Learn all about creating the perfect engagement and wedding ring.

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