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When we speak of a diamond's clarity, we are referring to the presence of identifying characteristics on and within the stone. While most of these characteristics are inherent qualities of the rough diamond and have been present since the earliest stages of the crystal's growth below ground, a few are actually a result of the harsh stress that a diamond undergoes during the cutting process itself.
If you think about the incredible amount of pressure it takes to create a diamond, it's no surprise that many diamonds have inclusions— material scratches, blemishes, or non-diamond material on their surface or inside. Diamonds with no or few inclusions and blemishes are more highly valued than those with lower clarity, not just because they are more pleasing to the eye, but also because they are rarer.
Clarity Grading is intended to describe, to what degree and under what conditions a diamond is free of naturally occurring
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A diamond is a carbon that crystallizes in the earth for millions of years. During the crystallization process, a variety of inclusions in the crystalline structure may occur. These inclusions, described by terms such as cloud, feather, dark inclusions, etc., are found in almost every diamond and are generally caused by conditions present when the diamond was formed, though blemishes may also occur during the polishing process. The grading for clarity measures how many or few of these flaws are found and gives special consideration to where they are located in the diamond.
The Clarity of a diamond is based on the number, location, size, and type of inclusions found in the stone. An inclusion is an imperfection or traces mineral in the stone that is visible under the magnification of a jeweler's loupe. The fewer inclusions the diamond has; the clearer, more brilliant and more expensive the diamond will be. A " Flawless" diamond is one that has no inclusions and is extremely rare and valuable.
Diamonds with few flaws, or inclusions, are very rare and highly valued. Inclusions are natural identifying characteristics such as minerals or fractures, appearing while formed in the earth. They may look like tiny crystals, clouds or feathers