You're asking about two of the four Cs in diamond grading: clarity and colour.
Clarity
The numbers are self-explanatory. The initials are:
You can read more, below.
Colour
The colours you list are in the second tier of desirable colours for 'colourless' diamonds, D through H, being the most desirable.
You can read more, below.
PR is a grading system used for proof coins
it means that a porfecinal has authenticated and determaned the codition of a coin
PQ= Premium Quality. Bu= Brilliant Uncirculated.
DCAM stands for Deep Cameo and is reserved for proof coins
It means "premium quality". It is not an official form of grading.
In grading a diamond's clarity, VS indicates Very Slight.
The full form of vs is very slight.You can read more about GIA clarity grading systems, below, which include the vs assignment in context.
The indicator E-F in diamond grading may indicate a colour range for a white diamond. It is in the most desirable range, also known as colourless. You can review the colour range, below.
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.
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.
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.
Proof
when you are grading you can use the mean as an average.
If something "lacks clarity" it means it is confusing or the purpose is unclear.
If something "lacks clarity" it means it is confusing or the purpose is unclear.
Mint status
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