Diamonds are rarely flawless, and if they are probably within a museum. For those of us not getting perfectly flawless diamonds, the range is from pristine clear diamonds to other that are used for tool parts. When you are searching for a diamond, what is important to know is the difference between those flaws. When graded, the flaws do not change depending on the type of flaw. The flaw isn't by the eye, just the number of them.
Why this is so important to understand is when buying a diamond, you can get a great value depending on the flaws. A company with craftsmanship that is wise will know how to hide flaws in the diamond, giving you a better value and appearance. Not having a diamond cut in a way that complements can be unsettling, but knowing what each flaw is helps when buying.
Called inclusions, diamond flaws are usually of two kinds. One are hairlines, often appearing in ways that look like a crack. A skilled diamond cutter will blend these into the edge, not allowing a diamond to show its 'flaws' as easily. Should you ever see a diamond that looks like crushed ice, or with cracks inside, that means that the inclusions are showing. While not necessarily dangerous to the integrity to the diamond, obvious hairline inclusions are not ideal to see.
The other inclusion that is often in diamonds are carbon. What these appear as are black spots, and can be very small and unable to be seen by the naked eye. Some, however, are easily seen and can be obvious to the eye. When looking at your diamond, look straight down into it and move it around in the light. If you do have a carbon inclusion that isn't obvious, like any other flaw, it can help bring down the costs and not be seen unless with a jewelry loop for inspection.
The ideal diamond, no matter what the number of flaws, should go beyond numbers and ratings. A diamond needs to make you feel something, and it is by this mark that you should judge it. Should you have a smile on your face, or see someone's face light up, when seeing the diamond you know that you are off to a good start.