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VS1 Clarity
VS1 Clarity

VS1 Clarity

Generally, we recommend seeking a diamond with a clarity grade of VS1 to SI2. With a beautiful VS1 or VS2 diamond, your stone will look identical to a flawless clarity diamond assuming all else is equal (yet will cost far less).

As you increase your carat weight, and inevitably the size of your diamond, more blemishes and inclusions may be visible to the naked eye. For diamonds greater than 2.01 Carat, we recommend looking for diamonds within the the VS1 Clarity grade. Most importantly, review all potential diamonds closely to ensure that they're eye-clean.

What Is VS1 Clarity?

To understand what VS1 is, it's important to know what clarity is (one of the 4Cs of diamonds). A diamond's clarity refers to the visual appearance of blemishes and inclusions. By definition, VS1 diamonds are those that are Very Slightly Included. These inclusions, however, are rarely noticeable to the naked eye.

In fact, diamond imperfections are almost inevitable. Diamonds are formed in the earth's mantle at a depth of 80-120 miles. They face extreme heat of up to 2,200 degrees Fahrenheit. While their growth takes between one to three billion years, only the rarest diamonds emerge in perfect condition. Most often, diamonds are imperfect and contain varying amounts of internal inclusions and surface blemishes.

The GIA grades Diamond Clarity on the following scale:

Clarity Clarity Description
FL Flawless: No inclusions under 10x. A stone that is completely flawless. This is an extremely rare find.
IF Internally Flawless: No internal imperfections. A stone that has no internal flaws at all but does have surface flaws. Also, an extremely rare find.
VVS1-VVS2 Very Very Slightly Included: A stone with very minute internal inclusions that are extremely difficult to see under a 10X magnification.
VS1-VS2 Very Slightly Included: A stone with very minor internal inclusions that range from difficult to somehwat easy see under a 10X magnification.
SI1-SI2 Slightly Included: A stone that has imperfections visible under X10 magnification and may be visible with the unaided eye.
I1-I3 Included: A stone that has significant inclusions most often visible with the naked eye. Inclusions of this level drastically bring down the diamonds value.

VS1 Diamond inclusions are barely visible under 10x magnification (a standard jeweller's loupe). When looking for VS1 inclusions using a loupe, it can take several seconds until the blemish spot is located. This also means that inclusions at the VS1 level are hardly ever noticeable to the naked eye, especially in diamonds that are less than 2.0 Carat.

VS1 Clarity Diamond
VS1 Clarity Diamond.

Diamond Inclusion Plot On A GIA Certificate
Diamond Inclusion Plot On A GIA Certificate.

Should I Buy A VS1 Diamond?

Our many years of experience in the diamond industry have shown us that VS1 and VS2 diamonds offer both excellent value and beauty. We often recommend our readers look for VS1 or VS2 diamonds, as long as they are eye-clean. SI1 and SI2 diamonds can be eye-clean as well, but you need to inspect them (or high quality photographs) with great care.

The most common mistake people make when buying diamonds is that they purchase a diamond with a clarity grade that's simply too high to appreciate. An eye-clean VS1 diamond will look identical to a flawless graded diamond assuming all else is equal, but will cost significantly less.

For example, a round cut 0.8 carat diamond graded at a VS1 clarity with F color and costs around $3,300. A round cut 0.8 carat diamond graded with a VVS2 clarity and F color but costs around $3,800. The VVS2 diamond costs 15% more than the VS1 diamond. Both diamonds are eye-clean meaning you can't see any blemishes or inclusions. Purchasing the VS1 clarity will get you the same result as far as beauty, but again, will cost 15% less.

Diamonds Of 2.0 Carat Weight Or Greater

As you increase in carat weight, and inevitably the size of the diamond, there's a possibility that inclusions will be more visible to the naked eye.
Some larger diamonds even those with a high clarity grade like VS1 and VS2 may not be eye-clean. In these larger carat weights, you may want to include VVS2 diamonds in your search as well.

With 1 carat diamonds, you can feel secure with a VS1 or VS2 grade. As you increase in carat, be sure the diamond is clean of imperfections when you look at it with your naked eye. Without using any magnification aids, you shouldn't be able to see any flaws or inclusions.

Diamonds With Step Cuts

Asscher cuts and emerald cuts are diamond shapes that contain step cuts. Diamonds with step cuts are either rectangular or square, and have many parallel facets. It's important to know that step cut diamond shapes show inclusions the clearest.

For asschers, emeralds and baguette shapes. You may have to bump up to a VVS2 to get an eye-clean diamond with step cuts.

Examples of undesirable VS1 diamonds

Inclusion Plot From GIA
Inclusion plot from GIA report shows a concentration of clouds in the same vicinity

As you can see in the images above, an eye-clean diamond isn't always guaranteed with the VS1 clarity grade. Having an eye-clean diamond is largely dependent on a few factors: color of the inclusions, cut quality (better light performance helps conceal imperfections), as well as the nature of the flaws.

Here's another questionable example of a 1.01 Carat princess cut graded with Very Slightly Included clarity. This inclusion may be visible to your naked eye depending on the type of lighting conditions and your eye's orientation to the diamond.

Princess Cut With Dark Inclusions
Princess cut with dark inclusions under table facet.

Overall, just be sure to review any diamond closely (no matter the clarity grade) to ensure there are no noticeable blemishes and inclusions.

Difference Between VS1 And VS2

It's often difficult to tell the difference between VS1 and VS2 diamonds, especially in weights of 1.0 - 2.0 Carats.

By definition, VS1 is a clarity rating where minor inclusions are somewhat easily detected by a trained professional under 10X magnification. Without using any magnification aids, you shouldn't be able to see any flaws or inclusions with your naked eye.

VS2 clarity inclusions, on the other hand, are almost always easily noticeable at 10x magnification (a standard jeweller's loupe). Occasionally, the inclusion will be in a difficult to spot location. In most cases, though, the inclusion is large enough that it can be spotted quickly under magnification.

While VS2 diamonds are usually eye-clean, some outliers exist, especially when it comes to larger sized diamonds. These outliers usually barely made it past the SI1 grade and have inclusions visible to the naked eye. This is why we stress the importance of reviewing magnified photographs and videos before any purchase on online.

Because of the slight differences between VS1 and VS2, we recommend looking for eye-clean VS2 diamonds with a carat weight less than 2.01. As you increase in carat weight, and the size of the stone, you may want to consider VS1 diamonds or even VVS2 diamonds.

Final Thoughts

When it comes to clarity, you want to take a close look at the diamond before making a decision. You need to see if the diamond has any inclusions and blemishes at the naked eye level. In order to look for these imperfections, you need high tech images. That's why recommend retailers who offer high quality photography online.