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As diamonds form deep in the ground, they institute minor deformities/natural birthmarks that are only visible under 10X magnification. These defects are known as inclusions and they help to determine the quality of a diamond. Graders also use them to differentiate between natural and synthetic diamonds. Fortunately, inclusions are nearly invisible to the naked eye. Let’s take a look at what exactly inclusions in diamonds are and the different types of inclusions.

What Are Inclusions in a Diamond?

Inclusions are defects found in a diamond. They are the diamond’s internal features, which may be visible from the top of a gem. Jewelers use the size and appearance of the inclusions to determine a diamond’s clarity. Most of the inclusions are formed during diamond formation due to the high temperature and pressure involved. Poor cuts and diamond treatments like laser drilling can also cause the formation of an inclusion. 

Are Inclusions Bad? 

No, inclusions are not bad apart from when they are likely to cause a diamond breakage, which is rare. Different inclusions have different sizes and shapes. They are named based on their appearance, including breaks, knots, feathers, crystals, and bubble inclusions. 

Inclusions are less visible in smaller diamonds than in large-sized diamonds. Where the inclusions are located also matters a lot. If the inclusion is at the center of the diamond, the clarity grade will be lower compared to a diamond with inclusions on its sides. 

Types of Diamond Inclusions 

There are different diamond inclusions, and each type affects the diamond’s appearance differently. Let’s explore some of them. 

  • Pinpoint — These are among the most common types of inclusions. They appear like small black spots on the table of a diamond. They have a similar appearance to blackheads on clear skin. 
  • Needle — This inclusion appears in a thin shape, and it is transparent or white. If it is located in clusters, it can lower the diamond’s clarity. 
  • Feather — They appear like small internal cracks in the cluster. If they are visible from top to bottom, the permanence of the diamond could be affected.
  • Knot It appears in a transparent or white color on the facet of a polished diamond. 
  • Diamond cavities — This is a small hole on the table of the diamond and appears like a tooth cavity. If you spot a cavity on a diamond, do not purchase it. 
  • Bearding — They appear like hairlines on the stone’s surface. They mainly occur during cutting, and if the stone is heavily bearded, it appears as though it has been scratched. 

Although inclusions are said to be imperfections, they make every diamond unique. At Solomon Brothers Jewelers, we have a wide range of diamonds with unique antiques to suit everyone’s style. Visit our stores today to have a look at our outstanding design. You can also contact our customer care services for more information.