Diamond Clarity Chart: The FL to I3 Scale Explained

Diamond clarity grades the tiny inclusions inside a stone, ranked by the GIA from Flawless (FL) down to Included (I3). Here is the part that saves you money: for most buyers, a VS1 or VS2 diamond looks flawless to the naked eye in any shape under 2 carats, and it costs far less than an IF or VVS stone you can only tell apart under a microscope. Clarity starts to show below SI2, and it shows fastest in step cuts like the emerald.

 

The GIA diamond clarity scale: FL to I3

Every diamond has a birthmark. Inclusions are the natural features that form inside a diamond as it grows, like tiny crystals, feathers, clouds, or pinpoints. Blemishes are surface marks. The GIA grades clarity under 10x magnification and sorts every stone into one of 11 grades. Lab-grown and natural diamonds use the exact same scale, and IGI grades clarity the same way, so the chart below works for both. To see how clarity sits next to the other grades, our guide to reading a diamond certificate walks through the full report.

Grade	What it means	Eye-clean?	Value read
FL — Flawless	No inclusions or blemishes at 10x	Yes	Collector tier; you pay for rarity
IF — Internally Flawless	No inclusions, only tiny surface blemishes at 10x	Yes	Looks the same as FL in a ring
VVS1, VVS2	Inclusions very, very hard to see at 10x	Yes	Premium for an invisible upgrade
VS1, VS2	Minor inclusions, hard to see at 10x	Usually yes	The sweet spot for most buyers
SI1, SI2	Noticeable inclusions at 10x	Often (check the stone)	Best value if it is eye-clean
I1, I2, I3	Obvious inclusions, may affect sparkle	No	Skip for a center stone

The picture below shows how those inclusions actually look as you move down the scale. It shows what a grader sees through a loupe, not a photo of one specific stone. FL and IF look clean. The VVS and VS marks stay faint. The inclusions only turn obvious once you reach the included grades.

 

The inclusions behind the grade

Graders name the features they find, and the report often lists them. The common ones are easy to picture. Crystals are tiny minerals trapped inside. Feathers are small fractures that look like a wisp. Clouds are hazy clusters of pinpoints. Needles are thin rods, and pinpoints are specks you can barely resolve. Most of these are harmless to how a diamond wears day to day. Two are worth a second look: a feather that breaks the surface, or one sitting near a thin edge, since either can raise the risk of a chip. So the type of inclusion matters as much as the grade itself. Read the plotted inclusion map on the report, not just the letter, and you will know exactly what you are buying.

Eye-clean vs 10x-clean: the only distinction most buyers need

The grading report is written under 10x magnification. You wear the ring at arm's length. Those are two different worlds, and the second one is the only one your friends and family will ever see. A diamond is eye-clean when it has no inclusions you can spot with the naked eye from a normal viewing distance, even if a loupe finds a few. That single idea is the most useful thing on this whole page.

 

Here is why it matters. A VS1 and an IF can look identical on your hand, yet the IF can cost a great deal more. You are paying for a difference that lives under a microscope. Our consultants check each stone for eye-cleanliness before we list it, and we verify every GIA or IGI report against the lab's database. So when you shop a grade, you are shopping a stone that has already passed the eye test. The takeaway is simple: chase eye-clean, not the highest letter on the chart.

Clarity by diamond shape: why step cuts show what brilliants hide

Two diamonds with the same clarity grade can look very different, because the cut decides how much the facets hide. This is the step most buyers miss, and it changes the grade you should aim for. You can see how every shape handles light in our diamond shapes guide.

 

Brilliant cuts hide inclusions. Round, oval, cushion, pear, and radiant cuts have dozens of facets that scatter light into a busy sparkle. That sparkle acts like camouflage, so an inclusion that a loupe finds can vanish to the eye. With these shapes you can often drop to SI1 and still look clean.

Step cuts reveal them. The emerald and Asscher have long, open facets that work like a hall of mirrors. They give a calm, glassy flash instead of fire, and that openness leaves nowhere for an inclusion to hide. For an emerald cut diamond, aim for VS2 or better.

A few brilliant shapes have their own quirks. The marquise and pear carry their inclusions toward the points, where the facets thin out. The princess cut can be fragile at the corners, so an inclusion near a corner is worth avoiding because that is where chips start.

Clarity by carat: why inclusions show up at 2 carats and above

Carat weight quietly raises the bar on clarity. A bigger diamond has a bigger table, the flat top facet you look straight through. That larger window makes the same inclusion physically bigger and easier to see. So a grade that is eye-clean at 1 carat can become noticeable at 3.

A rough guide helps. Under 1 carat, many SI1 and even SI2 stones are eye-clean. From 1 to 2 carats, VS2 and a carefully chosen SI1 are safe bets. Past 2 carats, lean toward VS1 to VS2, since the extra size puts every feature on display. The jump in price as you size up is real, and our cost per carat guide shows where your budget lands. If you are weighing a larger center stone, browse the range in our engagement ring collection to see how grade and size play off each other.

Where to save: VS1-VS2 is the sweet spot

If you take one number from this page, make it this: VS1-VS2 is where clarity stops mattering to the eye and keeps mattering to the price. A VS diamond is reliably eye-clean in any shape under 2 carats, yet it sells for far less than IF or VVS. The premium for those top grades buys you bragging rights on the report and nothing you can actually see.

SI1 is the move for the biggest savings, with one condition: you have to check that specific stone is eye-clean, because the position of the inclusion decides everything. An inclusion tucked near the edge hides under the setting. One sitting under the center of the table is the one to avoid. This is also why cut quality deserves more of your budget than a high clarity grade, since cut is what drives the sparkle you notice first.

Lab-grown diamonds make the math easier still. They carry the same clarity grades and the same GIA or IGI certificates, and they cost 40 to 70 percent less than mined stones with identical specs. That discount lets you hold a clean VS grade and put the savings toward size or a better cut. You can compare grades live across our lab-grown engagement rings.

When diamond clarity actually matters

For most rings, clarity is the C where you can relax once you hit eye-clean. There are a few cases where it deserves real attention, and spending up here is worth it:

• Step cuts. Emerald and Asscher cuts put inclusions on show. Treat VS2 as your floor, and pair it with a strong color grade from our diamond color chart.
• Large solitaires. At 2 carats and up, the wider table reveals more, so a VS grade earns its keep.
• Open-centered shapes. Ovals and pears with an inclusion under the center of the table will show it, while one near the tip or girdle stays hidden.
• Durability cases. A feather that reaches the surface, or one near a fragile corner, can risk a chip. This is a clarity issue worth raising with a consultant before you buy.

Outside of those, clarity is the quiet C. Get it eye-clean and spend the rest of your budget where it shows.

Frequently Asked Questions (FAQ)

The questions buyers ask our consultants most about the diamond clarity chart and how to use it.

What is the diamond clarity chart?

The diamond clarity chart is the GIA's scale for ranking how clean a diamond is, from Flawless (FL) at the top to Included (I3) at the bottom. Grades are set under 10x magnification and fall into six groups: FL, IF, VVS, VS, SI, and I. It is one of the 4Cs that together describe a diamond's quality.

What clarity of diamond is best?

The best clarity for value is VS1 or VS2. A VS diamond looks flawless to the naked eye in almost any shape under 2 carats, yet costs far less than IF or VVS. SI1 can be an even better deal if the stone is eye-clean. Paying for FL or IF rarely makes sense unless you collect for rarity rather than looks.

What does VS1 and VS2 clarity mean?

VS stands for Very Slightly Included. A VS1 or VS2 diamond has minor inclusions that are hard to see even under 10x magnification, and almost never visible to the naked eye. VS1 is a touch cleaner than VS2. Both are widely considered the sweet spot for buyers who want a clean look without overpaying, which is why we point most shoppers toward our engagement ring collection in this range.

What is an eye-clean diamond?

An eye-clean diamond has no inclusions you can see with the naked eye from a normal viewing distance, even though a loupe may reveal a few. Most VS diamonds are eye-clean, and many SI1 stones are too. Eye-cleanliness depends on the individual stone, so it is worth confirming the exact diamond rather than trusting the grade alone. Our cut quality guide explains how faceting helps hide inclusions.

What is the difference between SI1 and SI2?

Both SI grades have inclusions you can see under a loupe, but SI1 is cleaner than SI2. Many SI1 diamonds are eye-clean, especially in brilliant cuts that scatter light. SI2 is borderline: some are eye-clean and some show a visible mark, so SI2 always needs a look at the actual stone. In a sparkly shape like a round or cushion, SI1 can be a smart value pick.

Is VVS or IF clarity worth the extra money?

For looks alone, usually not. VVS and IF diamonds cost a clear premium over VS, but the difference is invisible without magnification. The money is better spent on cut, which drives the sparkle you actually notice, or on carat weight. The exception is a large step cut, where higher clarity genuinely shows. Compare grades across our lab-grown collection to see the gap.

What clarity should I get for an emerald cut diamond?

Aim for VS2 or better. The emerald cut is a step cut with long, open facets that act like windows, so it reveals inclusions a brilliant cut would hide. Pairing a clean clarity grade with a good color grade keeps an emerald cut diamond looking crisp. The same advice applies to the Asscher cut.

Do lab-grown diamonds use the same clarity scale?

Yes. Lab-grown diamonds are real diamonds and are graded on the identical GIA and IGI clarity scale, from FL to I3, with the same inclusion types. The only practical difference is price: lab-grown stones cost 40 to 70 percent less than mined diamonds with matching specs. That makes a clean VS grade far easier to afford. See the range in our lab-grown engagement rings.