Clarity refers to imperfections that can be seen in the diamond. This is widely talked about by consumers as being very important, but in most cases it has a very small relation to the diamonds sparkle and appearance. The reason for this is that these imperfections are microscopic. Natural inclusions or blemishes are in almost 99.9% of all diamonds. They are measured and graded on a scale of how many, what size, where they are located, and whether they can be seen with the unaided eye. When gemologists categorize a diamond in a certain clarity grade they review it with a 10x jewelers magnification loupe.
FL/IF Diamonds: Flawless diamonds
These have no inclusions that can be seen under 10x magnification. This is extremely rare, very beautiful, and very expensive.
VVS1/VVS2 Diamonds: Very Very Slightly Included
It is very difficult to spot any inclusion under a 10x magnification. They are eye clean diamonds, beautiful and expensive.
VS1/VS1 Diamonds: Very Slightly Included
The inclusions are not visible to the eye, and are difficult to see under 10x magnification. Excellent quality diamonds.
SI1/SI2 Diamonds: Slightly Included
The inclusions in these diamonds are usually not visible to the unaided eye, but are visible under a 10x magnification. These diamonds are of very good quality and value to the consumer.
I1/I2 Diamonds: Included
These diamonds have visible inclusions to the unaided eye.
Which Clarity is best for me?
SI-1 clarity diamonds are of great value and quality. They are diamonds with inclusions not visible to the unaided eye, and they are more affordable then VS1/VS2 diamonds. If budget is not of much importance then a diamond in the VS range is a excellent diamond that will also not have any visible inclusion to the unaided eye.