Clarity refers to how many flaws, or inclusions, are in the diamond. In most cases, clarity has very little to do with the beauty of the diamonds; rather, it affects how the diamond looks under the microscope. To determine a diamond's clarity grade, it must be examined under 10x magnification. Whatever minute inclusions there may be make every diamond unique. These are nature's fingerprints and in most cases do not mar the diamond's beauty nor endanger its durability. Without high magnification, these flaws are invisible. However, the fewer inclusions, the rarer your diamond will be. Generally, if a diamond is SI-2 or above, it is flawless to the naked eye. If there is even a tiny inclusion visible to the unaided eye, the stone is usually graded an I-1.