refer to the imperfections in a diamond. The less there are in a stone then the rarer the diamond and the more the stone will cost.
The clarity grades are organised according to, the size, position, colour, and number as well as the relief or the shape and size of a diamond.
Clarity grades are very subjective .They are read by a qualified grader using a special 10X lens.
This is an outline of GIA clarity grading.
Some imperfections are allowed, such as internal graining is permitted as well as some blemishes on the surface.VVS/1 and 2.
These I describe as minute .like a tiny pin prick, they are very difficult for a skilled grader to locate and VVS/2 can be seen from the top of a diamond.VS1 and VS2.
Described as minor .The same rules of size, position, number, colour and relief apply. Inclusions of this grade are usually very difficult for a diamond grader to locate .But in some circumstances they can be seen without a lens. An example is, an inclusion contained in an emerald cut diamond that is located at the top and over a facet in a larger stone.SI/1 and SI/2.
Described as noticeable .The same rules of size, position, number, colour and relief apply.
Inclusions of these grades may or may not be visible without a 10x lens. Particularly in larger and especially in Emerald cut stones.I/1 ,I2 and I/3.
The inclusions of this grade are described as obvious to a qualified grader using a 10X lens.I/1
inclusion may or may not be visible without the viewer using a lens. On a smaller diamond such as 0.20 carats they may not be visible by eye but on a 1.00 carat stone they most likely will.I/2
graded diamonds often give a sugary look to a diamond and I/3
diamonds will have a sugary look plus the inclusions may influence the stability of the diamond.Diamond reports.
Yes I call them reports, because that is what they are and that is what is stated on them; they should not be called certificates ,because they are not.
The first line in the small print on most reports say “this is not a guarantee”. This is important to understand.
These reports are all subjective, there is no International and agreed upon grading standard. This means that each issuer or laboratory has its own standard .
Some even use GIA terms (such as the GIA colour grade description of DEF...)And apply their own standards .Some companies even use the GIA terms of grading diamonds for grading other stones such as Moisonite and even coloured stones.
This action causes great confusion.