One can assume that clarity I2 is what you mean, instead of 12 -- 'eye two' not 'one two'.
A diamond with clarity I2 means that there are multiple inclusions or flaws that are visible to the naked -- unmagnified -- eye. The I stands for Included and the number represents the degree to which is it included. I1 being the least to I3 being the most.
IMP1 Clarity refers to a diamond clarity grading scale used by some diamond sellers. It is typically considered to be an inclusion-heavy grade, indicating visible inclusions within the diamond that can affect its appearance and value. Diamonds with IMP1 Clarity may have noticeable flaws and imperfections when examined under magnification.
Clarity for a diamond describes the number and amount of flaws or inclusions in a stone. Perfect clarity -- the lack of any flaws or inclusions -- is called Flawless, or Internally Flawless, which is the highest clarity grade.
The clarity grade of a diamond is determined by the number, and visibility, of its natural inclusions. Diamond clarity is rated using a 10x loupe, as a standard.Inclusions exist inside a diamond, or on its surface, and may be present in various forms, which include:pinpoints (white dots)carbon (black dots)feathersbubblescrystalscracksscratcheschipsYou can read more about diamond clarity, below.
S12 refers to the clarity grading of a diamond, with S12 indicating the presence of slight inclusions or flaws when examined under magnification. This level of clarity typically means that the imperfections are not readily visible to the naked eye, making it a good choice for a balance between quality and price in a diamond ring setting.
SI stands for "slightly included" and is a classification used to describe the clarity of a diamond. Diamonds with SI clarity have inclusions that are noticeable under 10x magnification but may be difficult to see with the naked eye. This clarity grade represents a good balance between quality and value for many buyers.
In grading a diamond's clarity, VS indicates Very Slight.
Clarity H-I sounds more like the colour grade. Clarity I2-i3 means that there are two or three visible inclusions in the diamond. This is the lowest clarity grade for gem-stone quality diamonds.
The value of a diamond depends on its cut, its clarity, its colour and its carat weight. A local jeweler can give you the answer you want. Just as an example, the range on a 1 carat diamond round cut could be as low as $913 to as high as $30,000. That is a huge range, given 12 colors and 12 clarity levels.
"The clarity of the diamond tells you how clear the diamond is"
Clarity of a diamond is an ANSII standardized procedure that involves placing a light near the diamond and measuring the refraction.
For a diamond, FL, or flawless, is the highest grade for clarity -- it is perfection for the stone in terms of its clarity.
You can review the charts and information, below, to learn more about diamond clarity symbols.
AAA clarity is not a recognized rating for diamonds. The standard clarity scale for diamonds ranges from Flawless (no inclusions) to Included (visible inclusions). AAA is not a term used in the diamond industry to describe clarity.
You can have the clarity of a Diamond assessed at a Jewellers, often the item may be needed to be sent away. With an Enhanced diamond the diamond has been treated to achieve a better clarity than it originally had.
Trained gemologists use a 10x magnification to identify diamond clarity. You can read more about how clarity is graded by understanding the flaws and how they occur, below.
If by 'you' you mean 'U', and you're query is about clarity and not colour, it is possible that 'U' indicates unenhanced. Unenhanced diamonds are more valuable than enhanced diamonds.
SI2 indicates that in at least two places inside the diamond, inclusions, however slight, are visible.You can view diamond clarity images, below, including one for a diamond graded as SI2.