Quick answer
What diamond clarity should I buy?
For most engagement-ring buyers, the goal is not the highest clarity grade; it is the lowest grade that gives the appearance and durability you want in the specific stone. VS2 is often a strong starting point because GIA classifies its inclusions as minor under 10× magnification, while many VS stones have no eye-visible inclusions. Shape, carat size, inclusion type and location can justify moving higher or lower.
Key takeaways
- Clarity is graded at 10× magnification.
- VS2 is a useful starting point, not a universal rule.
- Step cuts and larger stones can reveal inclusions more readily.
- Judge inclusion type and location, not only the letter grade.
- Money saved on invisible clarity can often improve cut, size or setting.
Start with what clarity measures
GIA clarity grades run from Flawless to Included and consider the size, number, position, nature and relief of internal and external characteristics. The grading scale is precise, but the buying question is visual: which characteristics can you actually notice and do any create a durability or transparency concern?
A practical starting range
For many brilliant-cut engagement diamonds, VS2 or VS1 is a sensible place to begin. GIA notes that VS inclusions are minor and that 'eye-clean' is an industry term rather than an official grade. Inspect the actual stone or high-resolution media rather than assuming every stone in a grade looks identical.
When to consider higher clarity
Consider VS1, VVS or higher when buying a large stone, a step cut such as emerald or Asscher, a stone with a centrally located inclusion, or when high paper clarity has personal value. GIA notes step cuts can benefit from higher clarity because their large open facets reveal the interior more readily.
What inclusions should I avoid?
When lower clarity can work
An SI1 can sometimes offer value when the inclusion is not visible face-up, does not reduce transparency and does not create a durability issue. But variability rises as clarity drops, so stone-specific inspection becomes more important.
Does clarity matter more in emerald cuts?
What to inspect
Check the grading plot when available, identify the grade-setting inclusion, view the diamond face-up at normal distance and magnified, and ask whether feathers, cavities, clouds or other features affect appearance or durability.
Can an SI1 diamond be eye-clean?
CaratSignal decision rule
Buy clarity for visible cleanliness and structural confidence, not rarity you cannot see—unless rarity itself is part of what you value.
CaratSignal Research
Sources and methodology
- Diamond Clarity | GIA 4CsGemological Institute of America · Researched September 28, 2026
- Seven Things to Know When Looking at Diamond Clarity | GIA 4CsGemological Institute of America · Researched September 28, 2026
- VVS vs. VS Diamonds | Diamond Clarity Differences | GIA 4CsGemological Institute of America · Researched September 28, 2026
CaratSignal uses laboratory and consumer-education sources for grading facts and separates grading standards from buyer preferences. Fancy-shape appearance is treated as stone-specific because GIA does not assign its standard round-brilliant cut grade to fancy shapes.
Read the research methodology- First published
- September 28, 2026
- Last researched
- September 28, 2026
- Last updated
- September 28, 2026
- Research status
- published