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Showing posts with label Clarity Enhanced Diamonds. Show all posts
Showing posts with label Clarity Enhanced Diamonds. Show all posts

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Clarity Enhanced Diamonds - The Laser Drilling Procedure

Saturday, May 28, 2011 by admin

Buying a diamond is not as easy as it used to be. Besides the basic 4 C’s to look for, now you have to make sure of the pedigree of the diamond you are buying. New issues are emerging that question the true value of the diamond.

This is the case with the clarity enhanced diamonds. Normally when a diamond has a visible imperfection, it would not be worth as much, if anything, to the buyer. Now, jewelers can use what is known as laser drilling, a technique that is used to drill out microscopic holes in the diamond to remove any imperfections and improve the clarity and grade of the diamond you are buying.

The dealers are drilling deep into the diamond to burn out any of the large black inclusions that may naturally form in a diamond. It evaporates the black imperfections making the stone more fragile to break. The process of laser drilling does leave small drill holes, but can be unnoticeable unless under a microscope.

Approximately 1 in 3 diamonds are laser drilled to add more value. In the 1990’s the Federal Trade Commission rewrote the jewelry laws stating that the jewelry industry no longer needed to disclose the fact that it was a clarity enhanced diamond. You can certainly ask your jeweler if it was laser drilled, but it is best to ask for a certificate from a gemological lab which most jewelers will have available to you if it is indeed a authentic diamond.

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Clarity Enhanced Diamonds

by admin

The clarity of a diamond is an important factor in determining a diamond’s worth. Clarity is a measure of a the purity of a diamond or the number of flaws in the diamond. The most common inclusions in diamonds are fractures that appear to be a feather like, whitish spot inside the diamond.

A diamond with poor clarity does not reflect light in the same way as a more perfect stone. Light can not pass through an imperfection in a diamond. Instead, the flaw will reflect the light in several directions, making the impurity more noticeable. These less than perfect diamonds can be improved through clarity enhancement processes.

One common clarity treatment is laser drilling. An infrared laser is used to drill tiny holes into the diamond near the flaw. Once the laser reaches the impurity, the bad crystal is immersed in a sulfuric acid solution and dissolved away.

Another process often used to enhance the clarity of diamonds is fracture filling. Fracture filling usually follows the drilling process. A microscopic amount of a special reflective glass like material is inserted into the flawed area of the diamond. This material allows light to pass right through the imperfections, making them appear almost invisible.

Clarity enhancement does not necessarily improve the value of a diamond. A clarity enhanced diamond is less expensive than a similar naturally purer stone, but appears just as beautiful. The effects of the treatment processes can only be seen if closely examined under a microscope. Clarity enhanced diamonds are beautiful stones at a more affordable price.

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Clarity Enhanced Diamonds – Fracture Filling Techniques

by admin

Clarity is considered one of the most important of the 4 C’s when looking for a diamond. Clarity is often enhanced, which is something you may not know even after you have purchased the diamond of your dreams.

There is a technique called fracture filling that has recently become popular, even though it originally was started in 1982 by Mr. Zvi Yehuda of Israel. It is a process that melts a crystal like substance into the cracks and fractures of a diamond that is unlikely to be of any value. It can also be filled with a type of molten glass made special by Yehuda, but no one can tell for sure, as the techniques are relatively unknown. We do know that it uses varying degrees of heat, and slowly fills in every crack on the surface possibly using a vacuum method to keep the stone from breaking completely from the heat. The stone is then cooled down and polished to remove any excess filling.

To an untrained eye, it is completely unnoticeable and often is only found under a microscope. There are some subtle ways in which you can tell if you have a clarity enhanced diamond, such as the flash effect, cloudy surfaces, gas bubbles in the diamond, as well as a cracked texture.

To make sure that your diamond is not fracture filled, you should ask for a written statement from your jeweler regarding any clarity enhancement techniques it may have used and any lab certificates it has.

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