Relating to the appearance of internal and surface defects in diamond
Part of a series on
Diamonds
Material
Material properties
Crystallographic defects
Formation and surfacing
The 4 Cs
Carat
Clarity
Color
Cut
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Diamond (gemstone)
List of mines
Diamond cutting
Synthetic diamonds
The diamond industry
Blood diamond
De Beers
Cultural impact
History
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Famous diamonds
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Simulants
Enhancements
Theft
Millennium Dome raid
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Diamond clarity is the quality of diamonds that relates to the existence and visual appearance of internal characteristics of a diamond called inclusions, and surface defects, called blemishes. Clarity is one of the four Cs of diamond grading, the others being carat, color, and cut.
Inclusions are solids, liquids, or gases that were trapped in a mineral as it formed. They may be crystals of a foreign material or even another diamond crystal, or may have produced structural imperfections, such as tiny cracks that make a diamond appear whitish or cloudy. The number, size, color, relative location, orientation, and visibility of inclusions can all affect the relative clarity of a diamond. A clarity grade is assigned based on the overall appearance of the stone under ten times magnification, which is the standard magnification for loupes used in the gem world.
Most inclusions present in gem-quality diamonds do not affect the diamonds' performance or structural integrity and are not visible to the naked eyes. However, large clouds can affect a diamond's ability to transmit and scatter light. Large cracks close to or breaking the surface may reduce a diamond's resistance to fracture.
Diamonds with higher clarity grades are more valued, with the exceedingly rare "Flawless" graded diamond fetching the highest price. Minor inclusions or blemishes are useful, as they can be used as unique identifying marks analogous to fingerprints. In addition, as synthetic diamond technology improves and distinguishing between natural and synthetic diamonds becomes more difficult, inclusions or blemishes can be used as proof of natural origin.
Heavily included diamonds used to be solely for industrial use. In recent years, salt and pepper diamonds have gained increasing popularity.[1]
^"Trend Alert: Salt and Pepper Diamonds". Gardens of the Sun. Retrieved 16 May 2023.
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