Shape Carat Weight Cut Clarity Colour Certificate Fluorescence Diamond Sizes

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Classification of Clarity

Diamonds are graded according to GIA's clarity scale according to how visible the inclusions are. The range of grading starts at Flawless where the diamond is completely free of inclusions even under magnification, to Included where the diamond has inclusions visible to the human eye. These categories originate from the ability to see the inclusions under 10x magnification (the loop that diamond professionals use generally have 10x magnification).

The F to VS2 categories are referred to by diamond professionals as "eye clean" and represent the highest category of quality. Providing the inclusions are not too visible to the human eye, the SI category could offer very good value for money.

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Grading	Definition	Comments
	Flawless or Internally Flawless	FL/IF - The difference between the two is that Flawless diamonds (FL) are 100% flawless inside and outside, whereas internally flawless diamonds (IF) are 100% flawless from the inside but will contain surface graining on the outside, which are technically not considered a flaw, but consist in the only point of differentiation between the extremely rare Flawless clarity grade and the very rare internally flawless clarity grade. Internally Flawless and flawless diamonds define purity; these diamonds sit at the top of the clarity ladder and do not have any internal flaws which make them extremely rare and as such commands a justifiable premium.
	Very very slightly included 1	VVS1 - A diamond of this clarity grade guarantees that its inclusion is invisible even with the aid of a 10x magnification loupe, which means one would need a microscope to spot any impurity in such diamonds. The type of inclusions such diamonds might have is one tiny inclusion. The inclusion is never visible to the unaided eye and can only be located using a powerful microscope. This clarity grade is almost as rare, but not quite as rare as the IF clarity, and as such is almost as highly regarded but commands less of a premium.
	Very very slightly included 2	VVS2 - A diamond of this clarity grade will often guarantee that its inclusions are invisible even with the aid of a 10x magnification loupe, which means one would need a microscope to spot the inclusions VVS and above clarity graded diamonds. The type of inclusions such diamonds might have are two tiny inclusions. The inclusions are not visible to the unaided eye and can only be located using a microscope (expert graders may be able to locate some VVS2 inclusion using a 10x magnification loupe). This clarity grade offers a very high level of clarity that is still very rare but less expensive price than a VVS1 or an IF
	Very slightly included 1	VS1 - A diamond of this clarity grade guarantees an eye clean diamond on any certificate and any shape. In most instances, it will also be hard to spot the inclusions, even with the help of a 10x magnification loupe. The type of inclusions such diamonds might have are one small or a few very tiny inclusions. The inclusions are not visible to the unaided eye (eye clean) and can only be located, sometimes with difficulty, using a 10x magnification loupe. VS1 clarity diamonds offer an excellent choice as they do not have the same price premium as the IF and VVS categories and are a very popular choice.
	Very slightly included 2	VS2 - A diamond of this clarity grade will in 95% of cases be eye clean to the naked eye. Rare exceptions, may include VS2 diamonds on EGL or IGI certificates (extremely rare on IGI) and in certain cases, Emerald cut diamonds as well as Asscher cut diamonds, where the diamond might still show signs of impurity to the naked eye even on GIA certificates. The type of inclusions such diamonds might have, will generally be two small or a series of tiny inclusions. The inclusions are almost always not visible to the unaided eye and can only be located using a 10x magnification loupe. VS2 clarity diamonds are an extremely popular choice as it is on paper, the last choice within the clarity range which virtually guarantees an eye clean diamond
	Slightly included 1	SI1 -A diamond of this clarity grade will almost always show visible inclusions on EGL certificates and very often on IGI certificates as well. An SI1 diamond on a GIA, HRD or AGS certificate will in over 50% of cases still be eye clean depending on the chosen shape. Please note that SI1 diamonds will most probably not be eye clean on Emerald and Asscher cuts on any given certificate. The type of inclusions such diamonds might have, will generally be one slightly large or medium or a few smaller inclusions. The inclusion(s) will often be hard to spot but may be visible to the unaided eye and tend to be easily located using a 10x magnification loupe. SI1 clarity diamonds are a very popular choice as they offer a substantial discount in price in comparison to VS2 clarity and in many cases offer an eye clean diamond.
	Slightly included 2	SI2 - A diamond of this clarity grade will, by definition have visible inclusions to the naked eye. In rare exceptions, on GIA, HRD or AGS certificates, the inclusions might be very difficult to spot to the naked eye. The type of inclusions such diamonds might have, will generally be one large, two medium or many small inclusions. The inclusions may sometimes be hard to spot but will almost always be visible to the unaided eye and are easy to locate using a 10x magnification loupe. SI2 clarity diamonds are less popular choice for those who seek an eye clean diamond, but with some well placed and lightly coloured inclusions they can appear almost eye clean and can therefore occasionally offer exceptional value for those wishing to maximise their budget
	Included	I1 or lower - These diamonds are not displayed on our website as their inclusions will always be visible to the naked quite clearly, even on the strictest certificates, such as GIA. As such, even though it is still possible for us to source such diamonds upon request, we would recommend going for SI2 clarity diamonds or above.