What “Clarity” Really Means When You Look at Diamonds Under Light
Someone once brought in a certificate that said VVS1 clarity and asked why the diamond still looked slightly cloudy to her under the window at our Bandra store.
Good question, and one I don’t think enough people ask before they buy. A grading certificate tells you what a gemmologist saw under a microscope in a lab.
It doesn’t tell you how that same diamond is going to behave on your finger under sunlight, office lighting, or the warm lights at a wedding.
Those are two very different things, and the gap between them is where a lot of buyers end up disappointed later.
Inclusions Aren’t Really “Flaws”, They’re Just Terrain
A lab grown diamond forms atom by atom, and during that process tiny irregularities can end up inside it, small dark pinpoints, faint internal lines, sometimes a light haze.
In a completely clean diamond, light hits the facets and bounces straight back to your eye, which is what gives it that sharp sparkle. When there’s an inclusion in the way, light either scatters oddly or gets partly absorbed right there, and you lose a small amount of that brilliance in that one spot.
Most of the time it’s tiny enough that it genuinely doesn’t matter. Sometimes it does.
Forget The Loupe, Think “Eye Clean”
Nobody walks around wearing a jeweller’s loupe. What actually matters in real life is whether a diamond is eye clean, meaning if you look at it face up from a normal distance, roughly arm’s length, under regular lighting, you can’t see any inclusions at all.
A VVS clarity stone is essentially always eye clean. VS clarity is usually eye clean too and tends to be the smartest place to spend your budget, since you’re paying for a stone that looks flawless without paying extra for perfection nobody will ever notice.
Once you drop into SI clarity, it becomes genuinely hit or miss, some stones look completely clean, others show a faint cloud or dark spot the moment you catch them in the right light.
Why The Same Diamond Looks Different In Every Room
This is the part most people never get told. A diamond doesn’t look the same everywhere, and where you check it matters almost as much as what grade it carries.
Under the bright spotlighting most showrooms use, diamonds flash constantly, and that rapid sparkle can genuinely mask small inclusions. A VS2 and an SI1 can look nearly identical under that kind of lighting, which is honestly part of why showroom lighting is designed that way.
It’s not dishonest, it’s just not the full picture.
Take the same stone near a window or under regular room lighting, and everything slows down. If there’s a cloudy cluster of inclusions inside, this is where it shows up, the diamond can look slightly foggy or sleepy instead of crisp.
And in direct sunlight, it’s the most revealing test of all. If there’s anything sitting near the centre of the stone, harsh sunlight will throw a faint shadow or catch it as an odd glassy glare.
We always tell people the same thing, don’t decide on a diamond purely under our showroom spotlights. Ask to step near a window, or even just outside for a minute, before you commit. It takes thirty seconds and it tells you far more than the certificate alone ever will.
The Cut Actually Changes How Much Clarity You Need
This surprises people every time we explain it. A round brilliant, oval, or pear shaped diamond has lots of small, chaotic facets, and that constant scintillation genuinely hides minor inclusions well. You can often go with an SI1 in these shapes and the sparkle does the camouflaging for you.
Emerald and Asscher cuts work completely differently. They have long, flat, mirror like facets instead of lots of small ones, which means there’s nowhere for an inclusion to hide.
If there’s anything in the stone, that clean, glassy surface shows it clearly.
For these two shapes specifically, we’d never go below VS1 or VVS2, because what you’re paying for with a step cut is exactly that uninterrupted, icy clarity, and a visible inclusion undermines the entire point of choosing that shape.
What To Actually Look At On A Certificate
Beyond the clarity grade itself, glance at the clarity plot, the small diagram on the certificate showing where the inclusions actually sit. Inclusions pushed out toward the edge of the stone are usually easy to hide once the piece is set, since the prongs cover that area naturally.
Inclusions sitting dead centre under the table are the ones that actually affect how the diamond looks, since that’s exactly where light enters and exits the most.
Where To Actually Spend The Money
If you’re buying a round, oval or pear shaped diamond, we wouldn’t spend extra pushing clarity up to VVS or flawless. Put that money into a better cut grade instead, an Ideal or Excellent cut VS2 will out sparkle a poorly cut flawless diamond every single time, under every kind of light.
If you’re going with an emerald or Asscher cut, that’s the one case where we’d tell you to protect your clarity grade and not compromise below VVS2, because with that shape, clarity is doing all the visual work.
PEOPLE ALSO ASK
It means that when you look at the diamond face up from a normal viewing distance under regular lighting, no inclusions are visible to the naked eye, even if a microscope would still show them.
For most diamond shapes, yes. VS2 is usually eye clean and tends to be the smartest balance between price and how the stone actually looks in real life.
Showroom spotlighting causes intense sparkle that can hide minor inclusions. Regular indoor light and daylight are calmer and reveal a stone's true clarity far more honestly.
Yes. Step cuts like emerald and Asscher have broad, flat facets with no chaotic sparkle to hide inclusions, so anything below VS1 or VVS2 tends to show clearly.
Not necessarily. Beyond eye clean, higher clarity mostly affects price rather than appearance, so it's often smarter to spend that budget on a better cut instead.
