Diamond cut information

How to buy a diamond	Diamond FAQ's
A diamond dictionary	Diamond jewelry

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A good understanding of diamonds is necessary before you begin shopping. We've put the basics together here to help guide you. Learning about diamonds is really learning about the "four Cs" of diamonds - cut, clarity, color and carat weight. These are the criteria jewelers use when grading diamonds, and they're the ones you'll need to understand to find the right diamond for you.

Diamond cut is perhaps the most important of the four Cs, so it is important to understand how this quality affects the properties and values of a diamond.

A good cut gives a diamond its brilliance, which is that brightness that seems to come from the very heart of a diamond. The angles and finish of any diamond are what determine its ability to handle light, which leads to brilliance.

As you can see in the image below, when a diamond is well-cut, light enters through the table and travels to the pavilion where it reflects from one side to the other before reflecting back out of the diamond through the table and to the observer's eye. This light is the brilliance we mentioned, and it's this flashing, fiery effect that makes diamonds so mesmerizing.

In a poorly cut diamond, the light that enters through the table reaches the facets and then 'leaks' out from the sides or bottom of the diamond rather than reflecting back to the eye. Less light reflected back to the eye means less brilliance.

Don't confuse diamond cut with shape. Shape refers to the general outward appearance of the diamond, not it's reflective qualities..