Gemstone Clarity Guide: FL, IF, VVS, VS, SI, I Explained Simply

When you buy moissanite, diamonds, or colored gemstone jewelry online, you often see clarity grades such as VVS1, VVS2, VS1, VS2, SI1, SI2.
Many buyers do not know what these grades mean and which one is suitable for daily wear.In this complete clarity guide, we will break down all gemstone clarity levels from highest to lowest in simple language.
What Is Gemstone Clarity?
Clarity refers to the number, size, and position of natural tiny inclusions inside a gemstone.
Almost all natural and lab-grown stones have tiny internal features. The fewer inclusions, the cleaner and more brilliant the stone.

Complete Gemstone Clarity Ranking (From Best to Good)

1. FL (Flawless) — Perfect Grade
- No internal or external flaws
- Extremely rare and high-value
- Mostly for collection, not daily wear

2. IF (Internally Flawless)
- Clean inside, only minor surface marks
- Top luxury gemstone grade

3. VVS1 / VVS2 (Very Very Slight Inclusions) — Premium Grade
VVS1: Ultra-clean, inclusions almost invisible under 10x magnification
VVS2: Tiny inclusions visible only under professional tools

Naked eye: completely clean
Best sparkle and transparency
Most popular grade for high-end moissanite & fine jewelry

4. VS1 / VS2 (Very Slight Inclusions) — Daily Premium Grade
Small slight inclusions that are difficult to see with naked eyes.
Great balance of quality and price, perfect for casual daily jewelry.

5. SI1 / SI2 (Slight Inclusions) — Entry Grade
Small inclusions are slightly visible in bright light.
Suitable for low-budget fashion jewelry.

6. I1 / I2 / I3 (Included) — Low Grade

Obvious black spots, clouds, and cracks.
Visible flaws, low brilliance.
Which Clarity Grade Is Best for Jewelry?
For Engagement Rings & Luxury Gifts → VVS1 / VVS2
Zero visible flaws, maximum fire and shine, premium looking.
For Daily Wear Necklaces & Earrings → VVS2 / VS1
Clean, sparkling, and long-lasting.
For Budget Fashion Jewelry → VS Grade
Good-looking and cost-effective.
Why VVS Grade Is the Best Choice for Moissanite
Our store mainly provides D-color VVS1 / VVS2 moissanite.

Compared with lower grades, VVS moissanite features:
- Colorless and crystal-clear texture
- Strong fire and brilliant sparkle
- No visible black dots or impurities
- High-end diamond-like visual effect

Final Conclusion
- FL / IF: Collector level
- VVS1 / VVS2: Top daily fine jewelry grade (most recommended)
- VS1 / VS2: Economical premium grade
- SI / I: Low clarity with visible flaws

For people pursuing bright, clean, and luxurious jewelry, D color VVS clarity is always the perfect choice.