What Are Diamond Inclusions?
Diamond inclusions are minor imperfections that occur within the structure of the diamond. They are caused by the extreme heat and pressure that works on the carbon when transforming into a diamond. Inclusions play an important role when determining the clarity of a diamond.Types Of Inclusions
Here is a rundown of the various types of diamond inclusions:- Pinpoint inclusions: These tiny black spots are the commonest types of inclusions.
- Diamond cavities: These are small holes within the diamond. They are the least common, but reduce the quality of the stone considerably. Diamonds with this type of inclusions make industrial tools such as drill bits.
- Feather inclusions: Tiny cracks on the surface or inside a diamond. They may compromise the durability of the precious stone.
How Do Professionals Grade Diamond Inclusions?
Many independent certifying labs, including AGSL and GIA, use certain guidelines to determine inclusions in diamonds, and their impact on quality. Here are the guidelines for grading inclusions:- Size: The size of the inclusion determines the grade of the gem. Bigger inclusions lower the grade of the diamond incredibly.
- Visibility: Professionals also look at how visible the inclusion is. Visible inclusions lower the clarity of the gem.
- Location: Location of the inclusion determines the value of the diamond. Inclusions occurring at the bottom of the stone may not affect its clarity, as would those at the center.
- External or internal: Regardless of whether the inclusions are internal or external, they'll still affect the clarity of the diamond. However, gems with external inclusions are often quite valuable because they are internally flawless.