Diamond Clarity: A Deeper Look at Diamond Inclusions

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Welcome to The Ring Adviser's Weekly Diamond Finds. Today we will continue our in-depth analysis at Clarity. The second most important factor in determining the worth of a diamond, Clarity refers to the number of inclusions found within the diamond, as well as their location and color. While most people are familiar with the basic terminology that corresponds with Clarity, this series of posts will provide greater detail as to what is lurking within the intricate structure of your diamond.

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Diamond Clarity: A Deeper Look at Diamond Inclusions

As we detailed in our original post, inclusions are not the same as blemishes. While we know what the various types of inclusions are called, what are they exactly? Below you can find more information on each type of inclusion, as well as some insight into how they were created.


Pinpoint: A Pinpoint is a microscopic spec of material that is not from the same diamond. This can be anything really; a mineral, a spec of dust even another diamond. The net result, as the name suggests, is a Pinpoint. If there is a grouping of Pinpoints then that is referred to as another type of inclusion, a Cloud.


Knots: A knot is basically a Pinpoint inclusion that has reached the surface. As such, it is made up of a different crystal or diamond. Just like a knot on a piece of wood, there can be a natural beauty to this feature. Plus, the embedded crystal can be anything really, so it can have any color as well. All in all though, try to avoid Knots. 


Feather: One of the few inclusions that can actually compromise the integrity of the diamond, a feather is simply an internal crack. More like a chasm or a void in the growth, as long as the crack is found internally there shouldn't be a problem. If it is located towards the edge of the diamond or close to a girdle, the possibility does exist that it can damage the diamond. They are easy to spot as they actually do look like feathers.

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Twinning Wisp: A Twinning Wisp is the result of a delay in the diamonds crystalline growth. The most popular analogy would be to stretch marks on a human's skin, or the rings in a tree's trunk. If the crystal structure would have grown completely uninterrupted, it wouldn't exist. But, because there was a stoppage, you have a series of tiny little clouds, feathers and pinpoints from the start stop process. This irregular internal growth can come across as straight lines as well, which is referred to as Graining.


Laser Drill Line: A Laser Drill Line is one of the few inclusions that is man-made. Basically, while the jeweler is cutting the diamond, he drills a tiny laser pin hole to reach in and remove another inclusion (usually something black and/or darker). The resulting Laser Drill Line is invisible to the eye.


Bearding: Bearding, while commonly considered an inclusion, is really more of a blemish as it is man-made. Bearding occurs during the cutting process as the diamond is ground down into its round shape. As the grinder smoothes out the diamond, too much pressure was applied to the surface. The end result is a series of scratches. Usually, Bearding can be hidden given the mounting style.

Hopefully, this will give you a better understanding of Inclusions and how they can affect your future diamond. In our next installment, we will take a deeper look at Blemishes and review their characteristics. After that, we will start breaking down how a diamond's price is effected based on different Clarity ratings.

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