Diamonds are one of the most popular and coveted gemstones in the world. The brilliance and beauty of a diamond are largely determined by its clarity, which refers to the absence or presence of inclusions and blemishes. In this guide, we'll explore the diamond clarity grading system and explain how to choose a diamond with the right clarity for your needs.

Diamond Clarity Grading System

The diamond clarity grading system is based on the number, size, and location of inclusions and blemishes within a diamond. The system ranges from flawless (FL) to included (I3), with 11 total grades. The grades are determined by trained gemologists who examine the diamond under 10x magnification and assign a grade based on the number and visibility of inclusions and blemishes.

Diamond Clarity Characteristics

Inclusions are internal characteristics that are trapped within a diamond during its formation. They can be crystals, minerals, or gases, and they can affect the diamond's appearance and durability. Blemishes are external characteristics that occur on the surface of a diamond, such as scratches, pits, and nicks. Both inclusions and blemishes can impact a diamond's clarity grade and value.

Types of Inclusions and Blemishes

There are many different types of inclusions and blemishes that can be found in diamonds. Feathers are the most common type of inclusion and refer to small cracks or fractures within the diamond. Clouds are clusters of tiny inclusions that can create a hazy or milky appearance. Pinpoints are small crystals that can be found within a diamond, and needles are long, thin inclusions that can resemble tiny hairs.

Blemishes can include scratches, chips, and nicks on the diamond's surface, as well as abrasions caused by wear and tear.

Diamond Clarity and Value

The clarity of a diamond can greatly impact its value. Diamonds with higher clarity grades (such as IF or VVS) are more rare and valuable because they are free of visible inclusions and blemishes. Diamonds with lower clarity grades (such as SI or I) may have visible inclusions and blemishes, which can lower their value. However, the overall value of a diamond is determined by a combination of factors, including carat weight, cut, and color.

Diamond clarity grades Set by GIA

The Gemological Institute of America (GIA) is the leading authority in diamond grading and provides a standard grading system for diamonds based on clarity. The clarity grade of a diamond refers to the absence or presence of blemishes and inclusions within the diamond. These grades are as follows:

Flawless (FL) - This is the highest clarity grade a diamond can receive. A flawless diamond has no visible inclusions or blemishes when viewed under 10x magnification.

Internally Flawless (IF) - The next highest clarity grade is internally flawless. These diamonds also have no visible inclusions when viewed under 10x magnification. However, they may have slight blemishes on the surface of the diamond.

Very Very Slightly Included (VVS1 and VVS2) - These diamonds have minor inclusions that are difficult to see under 10x magnification. VVS1 diamonds have inclusions that are extremely difficult to see, even for a skilled grader, while VVS2 diamonds have inclusions that are slightly more visible but still very difficult to see.

Very Slightly Included (VS1 and VS2) - These diamonds have inclusions that are noticeable under 10x magnification but are not visible to the naked eye. VS1 diamonds have inclusions that are typically not visible from the top of the diamond, while VS2 diamonds may have inclusions that are slightly more visible.

Slightly Included (SI1 and SI2) - These diamonds have inclusions that are easily visible under 10x magnification and may be visible to the naked eye. SI1 diamonds have inclusions that are usually not visible to the naked eye, while SI2 diamonds may have inclusions that are more easily visible.

Included (I1, I2, and I3) - The lowest clarity grade is included, which means the diamond has inclusions that are visible to the naked eye. I1 diamonds may have inclusions that are visible from the top of the diamond, while I2 and I3 diamonds may have inclusions that affect the overall transparency and brilliance of the diamond.

When purchasing a diamond, it's important to consider the clarity grade and how it affects the diamond's appearance and value. While flawless and internally flawless diamonds are highly coveted, diamonds with lower clarity grades can still be beautiful and valuable depending on the size, cut, and other factors. It's important to work with a reputable jeweler and consider all aspects of a diamond's quality before making a purchase.

How do AGS grades diamond clarity

The American Gem Society (AGS) also uses a diamond clarity grading system similar to the GIA, but with a slightly different approach. Like the GIA, the AGS uses a 6-point scale to grade diamond clarity, but also includes half-points for added precision. The AGS takes into account the size, location, nature, and number of inclusions in a diamond, as well as the overall appearance of the stone. The AGS clarity grades range from 0 (flawless) to 10 (included). A diamond with an AGS clarity grade of 0-2 is considered to have no visible inclusions, while a grade of 3-5 may have inclusions that are visible under 10x magnification. A grade of 6-10 indicates inclusions that are visible to the naked eye. Overall, the AGS places a strong emphasis on a diamond's overall appearance and beauty in addition to its clarity grade.

How to Choose a Diamond with the Right Clarity

When choosing a diamond, it's important to consider your personal preferences, budget, and the intended use of the diamond. For example, a diamond for an engagement ring may need to have a higher clarity grade than a diamond for a pendant. Additionally, it's important to choose a diamond with a clarity grade that you find visually appealing. Some people may prefer a diamond with some visible inclusions, as they can give the diamond character and uniqueness.

Diamond Clarity Enhancement Techniques

Diamond clarity enhancement techniques, such as laser drilling and fracture filling, are used to improve the appearance of diamonds with visible inclusions. These techniques can be controversial, as they can artificially enhance a diamond's clarity and lower its value. If you are considering purchasing a diamond that has undergone clarity enhancement, it's important to ask the seller for information about the techniques used and to make an informed decision.

Conclusion

Diamond clarity is an important factor to consider when purchasing a diamond. Understanding the diamond clarity grading system and the various characteristics that impact a diamond's clarity can help you choose a diamond that meets your needs and budget. Remember to consider your personal preferences and the intended use of the diamond when making your decision, and always ask questions about any diamond clarity enhancement techniques that may have been used.