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On the market today there are diamonds which are also known as "clarity enhanced" diamonds. While there are numerous ways to enhance a diamonds clarity only one form of enhancement has really only become known called "fracture filling". In this chapter we'll discuss both forms and familiarize you with what you need to know about them and answer most questions on the subject.

So as mentioned above I1's can make for nice earrings, pendants, etc. especially if you're not looking to drop the bigger bucks that are usually spend on engagement ring qualities. I should add however that I1's are in fact purchased by some for engagement rings but consumers generally stick to the SI grade and higher when it comes to engagement rings.

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What are "Clarity Enhanced" diamonds?

Clarity enhanced diamonds are diamonds that, more than often are diamonds that "had" eye visible imperfections. Meaning they are usually stones that were I1, I2 or I3 in clarity, and being that no one wants a diamond with "eye visible" inclusions, a jeweler or a person with that stone will have the inclusion(s) "treated" to be made invisible to the naked eye. The treatment is similar to the idea like if you've ever cracked a windshield, instead of replacing the entire windshield, the repairman just "fills the crack". Clarity enhanced diamonds are also known as "fracture filled" diamonds. In the graphic below is a great example of precisely what I'm talking about. The image on the left is a photomicrograph of a diamond we had acquired and had a rather large eye visible imperfection. After filling the imperfection and having it treated the inclusion became invisible to human vision.

Clarity enhanced diamonds

How can I know if a diamond has been "clarity enhanced"?

This is something that the jeweler should disclose to the consumer at the point of sale. Actually ... let me change that ... THIS IS SOMETHING THAT THE JEWELER SHOULD DISCLOSE to you BEFORE THE POINT OF SALE. If the deal sounds too good to be true, don't be afraid to ask if the diamond has been enhanced. Many jewelers who are selling these diamonds are not quick to disclose that info to you. "GIA" will not issue lab reports for clarity enhanced diamonds but "EGL" will and if it was an I2 that was made into an SI2 after enhancement, EGL will put SI2 on the certificate with a footnote that it's been enhanced. If this has been done to any diamonds on our website it will be published in plain language right on its web page.

If I have to trust the jeweler to tell me whether the diamond has been enhanced, how do they determine whether it's been enhanced?

Good question. There have already been jewelers who have bought these and weren't aware of it. I have already sold clarity enhanced diamonds (I knew it and so did the customer) and some appraisers who looked at the diamond didn't know it was enhanced. The best way to detect "fracture filled" or "clarity enhanced" diamonds is under a gemological microscope. The filling generally leaves a faint or strong neon color in the stone, which when observed face up is either invisible or could easily be mistaken for the spectral colors that are observed when looking at a stone face up. When the diamond is observed face down under a scope, however, the neon colors distinctly stand out. Here are some pics of clarity enhanced diamonds under the scope and what we see. The purple/pink flash is what gives it away.

The purple/pink flashThe purple/pink flash
The purple/pink flashThe purple/pink flash

Should I consider purchasing a clarity enhanced diamond for an engagement ring?

It depends on your circumstance. Many people buy clarity enhanced diamonds and are "very" happy. The ones who probably aren't happy are the ones who bought them and weren't told. There are many jewelers and people within the industry who frown on "clarity enhanced" diamonds, especially other diamond dealers. Why? Because this invention has brought less expensive, good looking diamonds to the consumer (considering the other 3C's are good too) and this is taking business away from them. If you are a guy looking to get the biggest diamond for the money and don't have all the cash to shell out for that 1, 1½, or 2-carat diamond but still want to get your girl a decent size rock, I would suggest considering a clarity enhanced diamond. If you do have the bucks, then you may not even want to consider it. It is nice to have the choice even if you do choose not to purchase one. For diamond stud earrings, it allows the consumer to get a notably larger diamonds for their dollar.

Clarity enhancement

Does "clarity enhancement" reduce the value of the diamond?

No and here's why. If a person buys a clarity enhanced diamond, they are in essence paying for the quality that the stone was "before" enhancement plus the labor it costs to make it enhanced. Say we took a 2-carat diamond that was an I1 in clarity with an eye-visible inclusion right under the table and the stones street value was 8-10 thousand. Now there aren't too many people who want a 2 carat stone with a big inclusion staring them in the face. But take that same exact stone, make the inclusion "invisible" to the naked eye and you have an eye clean 2 carat stone for 8-10 thousand dollars. To the guy who's shelling out 15-20 thousand dollars for the same "looking" thing, this doesn't sound too bad. So while the stone after enhancement may look like an SI (under the scope), you are still paying for the Imperfect. Here's a face-up view of a clarity enhanced diamond under the scope. The very faint feather under the table is where the enhancement was done.

Clarity enhancement

What are the guarantees with a clarity enhanced diamond?

The inventor of the process, Zvi Yehuda and the families business, Yehuda Diamond Company, guarantees that the diamond will never become "unfilled" or "un-enhanced" for the life of the stone. This is not to say that it couldn't happen, but if it does, Yehuda Diamonds will retreat the stone at no cost to you. Pretty strong guarantee. Below is a video published by them