When choosing a diamond, clarity plays a significant role in determining the stone’s beauty, brilliance, and value. The Gemological Institute of America (GIA) clarity scale is the most widely recognized grading system used to assess the internal and external imperfections of a diamond, known as inclusions and blemishes. At Delows, we’re proud to offer a wide selection of high quality, stylish, and affordable diamonds—both natural and lab grown—helping you make an informed choice whether you’re shopping for a ring, necklace, or bracelet.
What Are the 11 Clarity Grades?
The GIA clarity scale consists of 11 distinct grades:
Flawless (FL)
Internally Flawless (IF)
Very Very Slightly Included 1 (VVS1)
Very Very Slightly Included 2 (VVS2)
Very Slightly Included 1 (VS1)
Very Slightly Included 2 (VS2)
Slightly Included 1 (SI1)
Slightly Included 2 (SI2)
Included 1 (I1)
Included 2 (I2)
Included 3 (I3)
How Are the Grades Categorized and What Are They Called?
These 11 clarity grades fall under six broader categories:
Flawless (FL)
Internally Flawless (IF)
Very Very Slightly Included (VVS1 & VVS2)
Very Slightly Included (VS1 & VS2)
Slightly Included (SI1 & SI2)
Included (I1, I2 & I3)
Each category reflects the visibility, number, and location of inclusions or blemishes under 10x magnification.
Which Clarity Grade Is Best?
The highest clarity grade is Flawless (FL), which means the diamond has no inclusions or blemishes visible under 10x magnification. While this grade represents the pinnacle of diamond clarity, it is extremely rare and expensive. For many buyers, clarity grades in the VS1–SI1 range offer the best balance of visual beauty and affordability.
Is It Karat or Carat?
In the context of diamonds, the correct term is Carat (ct), not Karat, which is used to measure the purity of gold. Carat measures the weight of a diamond. It’s important not to confuse the two when purchasing precious stones.
What Do FL, IF, VVS1, and VVS2 Mean?
FL (Flawless): No internal or external flaws under 10x magnification.
IF (Internally Flawless): No internal flaws, only minor surface blemishes.
VVS1 and VVS2: Contain minute inclusions that are extremely difficult to detect under 10x magnification. VVS1 is slightly higher in clarity than VVS2.
These grades reflect extremely high quality and are often chosen for prestigious or heirloom jewelry.
What Are VS1, VS2, SI1, and SI2?
VS1 and VS2: Inclusions are minor and difficult to see under magnification. Great for engagement rings and necklaces.
SI1 and SI2: Inclusions are noticeable under magnification, but usually not to the naked eye. SI1 can offer excellent value.
These clarity grades are where most buyers find the sweet spot for affordable diamonds that still appear beautiful.
What Are I1, I2, and I3 Diamonds?
These grades represent diamonds with inclusions visible to the naked eye:
I1: May still be used in lower-priced or accent jewelry.
I2 & I3: Have prominent inclusions that can affect durability and brilliance. Generally not recommended for center stones in high-end pieces.
What Is the Relationship Between VS2 and SI1? (The Holy Grail of Diamond Clarity)
The VS2–SI1 range is often referred to as the “holy grail” for shoppers who want maximum value without sacrificing too much on clarity. These diamonds typically look eye-clean (free of visible inclusions) but cost significantly less than higher clarity stones. They’re perfect for those looking for stylish, high quality, and affordable jewelry without breaking the bank.
There Are Five Characteristics While Considering Inclusions
When evaluating a diamond’s clarity, gemologists look at:
Size – Larger inclusions have greater impact.
Number – More inclusions reduce clarity.
Position – Inclusions near the center are more visible.
Nature – Type of inclusion (feather, cloud, crystal, etc.)
Color or Relief – How noticeable the inclusion is.
If you’d like to learn more about Diamond Cuts, Clarity, Carat, and Color, click here.
What Size Are the Inclusions?
Inclusion sizes range from microscopic pinpoints to large crystals. In higher clarity grades like VS1 or VVS1, inclusions are tiny and require magnification to see. In lower grades like I2 or I3, inclusions may be visible to the naked eye and can affect the structural integrity of the diamond.
Different Types of Inclusions—What Are They?
Feathers – Small cracks within the diamond.
Clouds – Groups of pinpoints that give a hazy appearance.
Crystals/Minerals – Tiny minerals trapped inside.
Needles – Long, thin lines.
Graining – Internal lines caused by irregular crystal growth.
Understanding the type of inclusion helps determine how it affects a diamond’s appearance and value.
Where Are the Inclusions Commonly Found?
Inclusions are often found near the center (table) or edges (girdle) of a diamond. Central inclusions are more visible and reduce clarity grade more than those near the edge, which can sometimes be hidden under prongs in a ring setting.
What Color Are the Inclusions Usually?
Most inclusions are white or transparent, but some can be black, grey, or even colored, depending on the type of mineral present. Colored inclusions are more noticeable and can decrease the perceived clarity and beauty of the diamond.
Do Diamond Inclusions Get Worse?
In general, diamond inclusions are stable and don’t get worse over time. However, diamonds with feathers or large surface-reaching inclusions may be more prone to chipping if exposed to impact. Choosing a protective setting and handling your jewelry with care can mitigate these risks.
What Clarity Diamond Is the Best Value?
SI1 and VS2 grades offer the best value in terms of visual appearance and cost. These diamonds often appear flawless to the naked eye but are priced much lower than VVS or FL stones. At Delows, we specialize in sourcing beautiful, high quality diamonds that deliver both prestige and affordability.
What Is the Anatomy of a Diamond?
Understanding a diamond’s anatomy helps in evaluating clarity:
Table – The large, flat top surface
Crown – The upper portion above the girdle
Girdle – The outer edge or perimeter
Pavilion – The bottom part below the girdle
Culet – The tiny point at the base (sometimes faceted)
Inclusions can appear anywhere, but their location greatly affects the diamond’s visual appeal.
Final Note
Clarity is a critical part of the diamond grading scale and greatly influences a diamond’s appearance and price. Whether you’re considering a natural diamond or lab grown option, understanding the GIA clarity scale helps you make a smart, informed choice. Delows is committed to offering affordable diamonds in a variety of clarity grades—each selected for beauty, brilliance, and value. Whether it’s a ring, bracelet, or necklace, you can trust Delows to deliver stylish, high quality jewelry that celebrates life’s most beautiful moments.
Page updated last: June 27, 2025
