Wiki User
∙ 13y agoYou'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.
Wiki User
∙ 13y agoPR is a grading system used for proof coins
it means that a porfecinal has authenticated and determaned the codition of a coin
DCAM stands for Deep Cameo and is reserved for proof coins
PQ= Premium Quality. Bu= Brilliant Uncirculated.
It means "premium quality". It is not an official form of grading.
In grading a diamond's clarity, VS indicates Very Slight.
Clarity grade H1 is not a standard diamond grading term. The standard clarity grading scale for diamonds ranges from Flawless (FL) to Included (I). It is possible that H1 is a custom or internal grading designation used by a specific jeweler or diamond dealer.
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.
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.
"Ef" in diamond grading stands for "Extra Fine." It is used to describe a high-quality diamond that is very close to being colorless, with only slight traces of color visible. This grade is just below the highest color grade of D in the GIA diamond grading scale.
Clarity 12 is not a standard clarity grade for diamonds. Clarity is usually graded on a scale from Flawless (FL) to Included (I), with different subcategories within this range. A clarity grade of 12 likely does not correspond to any recognized grading system for diamonds.
Proof
when you are grading you can use the mean as an average.
An SI quality diamond refers to a diamond that has inclusions that are slightly visible to the naked eye under close examination. SI stands for "slightly included" and is a clarity grade in the Gemological Institute of America's grading system. These diamonds offer a balance between quality and value.
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.