Diamond & Moissanite Clarity Guide: FL, IF, VVS, VS, SI, I Grades Explained Simply
2026-05-24
When you shop online for moissanite, natural diamond, or colored gemstone jewelry, you will often come across clarity grades including VVS1, VVS2, VS1, VS2, SI1 and SI2.
Most buyers do not fully understand what these grading labels mean, or which tier works best for everyday wear. This complete clarity guide breaks down the official diamond clarity scale from the highest quality to the lowest, using plain, easy-to-follow language.
What Is Clarity for Diamonds & Moissanite?
Clarity measures the number, size, and position of tiny natural internal inclusions inside a crystal stone.
Nearly all natural and lab-grown stones contain subtle internal features. The fewer visible inclusions a stone has, the cleaner, brighter and more brilliant it will appear.
Note: The FL, IF, VVS, VS, SI and I grading system shown below is the official diamond clarity standard from GIA. Colored gemstones like rubies, sapphires and emeralds do not use this classification system.
Complete Diamond Clarity Ranking (From Highest to Lowest Quality)
1. FL (Flawless) — Collector-Grade Perfection
- Zero internal inclusions and no surface blemishes
- Extremely rare and carries a very high price tag
- Mostly reserved for high-end gem collections, not practical for daily wearable jewelry
2. IF (Internally Flawless)
- Completely clean internally; only tiny minor surface marks under magnification
- Represents the top luxury tier of diamond grading
3. VVS1 / VVS2 (Very Very Slight Inclusions) — Premium Top-Tier Grade
- VVS1: Near-perfect clarity; inclusions are barely detectable even under 10x professional magnification
- VVS2: Minute inclusions only visible to gemologists with specialized tools
- Naked-eye performance: 100% clean with no spots or flaws
- Delivers exceptional light refraction and maximum sparkle
- The most sought-after clarity grade for high-end moissanite and fine jewelry
4. VS1 / VS2 (Very Slight Inclusions) — Daily Premium Grade
Small, faint inclusions that cannot be spotted by the naked eye.
Strikes an ideal balance between outstanding visual quality and reasonable cost, making it ideal for everyday casual jewelry.
5. SI1 / SI2 (Slight Inclusions) — Entry-Level Grade
Minor inclusions become faintly visible under bright direct lighting.
A budget-friendly option for affordable fashion jewelry pieces.
A budget-friendly option for affordable fashion jewelry pieces.
6. I1 / I2 / I3 (Included) — Low Clarity Grade
Prominent visible flaws such as dark spots, cloudy areas and internal cracks.
Obvious imperfections reduce light performance and overall brilliance.
Obvious imperfections reduce light performance and overall brilliance.
Which Clarity Grade Is Right for Your Jewelry?
- Engagement Rings & Luxury Gift Jewelry → VVS1 / VVS2 No visible flaws, intense fire and maximum shine for a premium, eye-catching finish.
- Daily Wear Necklaces & Stud Earrings → VVS2 / VS1 Crystal clear, consistently sparkling and durable for regular use.
- Budget-Friendly Fashion Jewelry → VS Series Attractive appearance with excellent cost performance.
Why VVS Clarity Is the Top Pick for Moissanite
Our store specializes in D-color VVS1 and VVS2 moissanite stones.
Compared with lower clarity tiers, VVS moissanite delivers these key advantages:
Compared with lower clarity tiers, VVS moissanite delivers these key advantages:
- Fully colorless, glass-clear crystal texture
- Exceptional light dispersion and brilliant sparkle
- Zero visible dark dots or internal impurities
- Realistic, high-end diamond-like visual effect
Final Conclusion
- FL / IF: Rare collector's investment grade
- VVS1 / VVS2: Top tier for daily fine jewelry (our most recommended option)
- VS1 / VS2: Budget-friendly premium clarity
- SI / I: Low clarity with noticeable visible flaws
If you are searching for bright, clean, luxurious-looking stone jewelry, D-color moissanite with VVS clarity will always be your ideal choice.
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