Answer: In diamond grading, “eye ‑clean” means that no inclusions or blemishes are visible to the naked eye. A diamond can have natural internal flaws and still be eye‑clean – they are just too small or well‑placed to be seen without magnification. Eye‑clean diamonds look flawless in everyday wear and offer great value compared to flawless grades.
Key points:
- Eye‑clean vs flawless: “Eye‑clean” means free of visible inclusions; “flawless” means no inclusions even under 10× magnification. Eye‑clean stones are much more affordable.
- Clarity scale basics: The common grades are FL, IF, VVS1/2, VS1/2, SI1/2 and I1. Eye‑clean diamonds are typically VS2 or higher for larger stones (over 1.5 ct), and SI1 or higher for stones under 1.0 ct.
- Carat and inclusions: As carat size increases, inclusions become easier to see. You may need a higher clarity grade to remain eye‑clean in bigger stones.
- Value for money: If you can’t see the difference with your eyes, don’t pay for it. VS and SI diamonds that are eye‑clean often provide the best mix of beauty and value.
| Clarity Grade | Visible Inclusions Without Magnification? | Typical Price Level | Good for Carat Size |
|---|---|---|---|
| FL / IF (Flawless) | Never | Highest | Any – but you’re paying for perfection |
| VVS1 – VVS2 | No visible inclusions | Very high | Great for any size, particularly >1.5 ct |
| VS1 – VS2 | Usually eye‑clean up to 2 ct | High | Ideal balance for 0.5–2 ct diamonds |
| SI1 | Often eye‑clean under 1 ct | Moderate | Good budget choice for <1 ct, inspect if >1 ct |
| SI2 – I1 | Visible inclusions | Low | Better for earrings/pendants where flaws are less noticeable |
FAQ
Is an SI1 diamond eye‑clean?
Often, yes. Many SI1 diamonds under 1 carat appear eye‑clean. Always inspect or ask your jeweller to confirm.
Should I buy a flawless diamond?
You don’t need to. Flawless grades cost much more and look the same as eye‑clean diamonds to the naked eye. Choose an eye‑clean VS2 or SI1 to maximise value.